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about_pressure_cookers

About Pressure Cookers

Information about pressure cookers and unless specifically stated, this information is for the manual stove top models. This is information I have put together from tips and information from research and is how I help others who are just starting out with using a stove top pressure cooker.

This information is by no means a substitute for your pressure cooker operation instructions and safety information. Follow all safety precautions for your model of pressure cooker.

Lee Thayer 2022/03/11 23:36


Basic Pressure Cooker Times

This is a quick reference chart based on me actually having prepared the items listed here. The times are for a stove top pressure cooker, mine is 9 liter (9 1/2 quart), with a pressure weight for 11-12 psi (80 kPa). As I test out more items I will add them to the list here. Updated on 20 Jan 2019.

BEANS (listed as soaked, for dry beans, follow the recipe link for additional information.)

Black, 500 grams (1 lb), soaked, 8 cups water, 6 minutes on pressure, natural release.
Black-eyed Peas, 500 grams (1 lb), soaked, 8 cups water, 5 minutes on pressure, natural release.
Chickpeas, 1 cup, soaked, 8 cups water, 13 minutes on pressure, natural release.
Great Northern, 500 grams (1 lb), soaked, 8 cups water, 8 minutes on pressure, natural release.
Pinto, 1 cup, dry, 4 cups water, 22-25 minutes on pressure, natural release.
Red Kidney, 500 grams (1 lb), soaked, 9 cups water, 8 minutes on pressure, natural release.

MEATS

Beef, Stew Beef, 1 kilo+ (1/2 lb+), 1-1 1/2 inches water, 20 minutes on pressure, natural release.
Chicken, whole (2 kilos or 4 lbs), 8 cups water (makes 2 quarts basic broth), 20 minutes on pressure for a thawed chicken, 30 minutes on pressure for a frozen chicken, natural release.
Chicken, pieces, thawed, bone in + 2 quarts water (to make broth at same time) 10 minutes, natural release. Boneless + 2 quarts of water (to make broth at same time) 2 minutes, natural release.
Duck, whole (1 large or 2 small), water to cover half the duck, 35 minutes on pressure, natural release.
Pork Chops, 4 thick cut, browned, 1 cup stock, 10 minutes on pressure, natural release.
Pork Ribs, 1 kilo+ (1/2 lb+), on steamer rack, 1 cup of water, 15 minutes on pressure, natural release.
Pork Shoulder/Butt, 1 kilo+ (1/2 lb+), 1-1 1/2 inches water, 33 minutes on full pressure, natural release.

VEGETABLES

Beets, 4-6 whole, on steamer rack, 1 1/2 cups water, 8-12 minutes on pressure (8 for small, 12 for large), natural release.
Carrots, 4 large, sliced, 2 cups water, 2 minutes on pressure, natural release.
Corn, 6-8 ears, shucked, 2 cups water, 1-1 1/2 minutes on pressure, natural release.
Long Beans, 3 cups, chopped, 2 1/2 cups water, 3-5 minutes on pressure, natural release.
Potatoes, quartered, 2-6 potatoes, on steamer rack, 2 cups water, 6 minutes on pressure, natural release. Perfect for mashed potatoes.
Potatoes, cubed, 4 large potatoes, peeled, cubed, on steamer rack, 2 cups water, 4 minutes on pressure, natural release. Perfect for potato salad.
Pumpkin, 2-3 large pieces, about 1 kilo (2 lbs), on steamer rack, 1 1/2 cups water, 5 minutes on pressure, natural release.


Pressure Cookers IV

What to do if your pressure cooker relief valves open or the gasket fails?

The main thing to keep in mind, is the heat!

When boiling water in a pot on the stove top, the hottest that water can get is 100° C (212° F), that’s it, but will certainly burn you.

When water heats in a pressure cooker and the pressure builds to lock the lid, the temperature of the water increases, and boiling stops. For 15 psi (100 kPa) pressure cookers, the temp of the water is as high as 121° C (250° F), considerably hotter, and results is very severe burns if you come in contact with the steam venting from open relief valves or a failed gasket.

Following the basic guidelines for using your pressure cooker makes your pressure cooker just another kitchen appliance. Know and understand the max fill specifications for your model and size of pressure cooker.

If the pressure vent becomes clogged on the inside, this increases the pressure inside and will cause the relief valve(s) to open, your first indication is the sound, it is loud! And the pressure expelled to atmosphere becomes steam, which is incredibly hot. This goes straight up, and what ever is in the cooker at this time will come out as well, this will ruin your ceiling.

If the gasket fails, on most stove top models there is two slots on the lid that direct the pressure and steam, away from you, the steam will ruin your kitchen.

For both of these events, you need to do two things quickly for the least amount of damage or cleanup to your kitchen. This is why I tell people to stay near the pressure cooker when in use so you can react if these happen.

First, turn off the heat.

Second, get the cooker off the burner.

Your kitchen will fill up with very hot steam once the relief valves open or the gasket fails, the heat goes up, so stay low, turn off the heat, then move the cooker to an unused burner or even to a counter top if you have a tile, marble, or heat resistant counter top.

Keep the lid away from you and never reach through the steam.

Open the windows, doors, etc., to get air moving through the kitchen to get it cooled down.

Leave the cooker alone and let it cool.


Pressure Cookers III

This tip concerns using alcohol in a pressure cooker. DON’T! This applies to stove top pressure cookers as well as electric pressure cookers.

Pressurizing alcohol, such as making vanilla extract with vodka and vanilla beans, causes the alcohol to evaporate creating a flammable vapor that is vented while on pressure. This can result in combustion, causing the vapor inside the pressure cooker to ignite, causing a fire or explosion of the pot.

For a stove top pressure cooker this is easy to visualize since you have an open under the pot. For an electric pressure cooker, there is a relay on the underside of the pot that opens and closes to regulate the temp inside the cooker, the relay, however small, has contacts that are not sealed, when the contacts open or close, a tiny spark is created, this can ignite the vapor. The end result from this happening can be a fire ejecting from the pressure cooker vent or as much as an explosion of the vessel causing damage and possibly injury to you or others in the vicinity.

However, after stating that, if you have a recipe for a steamed cheese cake or such, something like a batter, using a spoon or two of alcohol is ok to do, as the alcohol is very much diluted in the batter and there is no risk of causing the combustible vapor.

My reference for this is probably the smartest person on the planet when it comes to using pressure cookers. https://www.hippressurecooking.com/liquor/


Pressure Cookers II

This is a consolidation of information from a very informative website that has compiled data from several pressure cooker manufacturers as well as their own test. I use this site when I add pressure cooker recipes to the site. This post pertains to the use of a pressure cooker.

Much of this information comes from a highly reliable source: https://www.hippressurecooking.com/

When first starting to use a pressure cooker (this pertains to stove top type which I have), think simple items first, like a side dish or beans. Learn the basics, get comfortable using, and the basic mechanics of how it is used.

For beans, different beans have different times, same applies with dry or soaked beans. As I go through and prepare various types of beans, I will add a recipe here with the verified times. So far I have made pinto and red kidney beans, and the times I state in my recipes are perfect, and from the link provided at the top of this post.

For meats, different cuts have different times, stew beef is a different time from say an entire roast, as well as types of meat may have different times.

Your pressure cooker is a time saving tool, what I hate to see is pressure cooker chili recipes that call for canned beans, yes, canned beans. Well, that sort of defeats the purpose of using a pressure cooker to simple heat a pot of chili. How you should approach this is to use your pressure cooker to cook dry or soaked beans (dry red kidney beans takes 22 minutes on high pressure, and soaked takes just 8 minutes). Now you have flavorful beans for say a pot of chili. Drain the beans, now use the pot to brown your beef, add what ever you like, add the beans and just simmer in the pot without the lid, perfect.

Think about the time on pressure when you come across an internet recipe, does it seem right? When in doubt, check the time on the site at the top of this post. A few days ago I came across a recipe for Rajma, an Indian kidney bean curry. First thing I read is the reviewers comments and see what they say and what they changed. Many people said very bland, mushy, horrible, things they did to make it flavorful, etc. So I read through the ingredients, those seemed ok, and then read through the instructions, and one item seemed very odd “place the lid on the cooker and bring to high pressure for 40 minutes, then reduce to low pressure for another 15 minutes, then allow a natural release of pressure.” That seems extremely long for red kidney beans, that were soaked as well! So when in doubt, double check the time! 40 minutes on high pressure would certainly result in bland and mushy beans. I wrote the recipe to use 8 minutes on high pressure.

You need a liquid in the pressure cooker. Say you want to pressure cook beets, I use 1 1/2 cups of water and as many beets as I want, as long I do not go over 2/3 full on the pot. The liquid provides the steam to lock up the cooker, after that, the heat and pressure do the cooking. When the cooking is done, the liquid amount is nearly what you started with.

There is no taste and adjust using a pressure cooker. Once the lid goes on and on high pressure, go for the time indicated, once the pressure is released, you can taste and adjust, most times you will adjust and just simmer for a few minutes without the lid then serve. If an item is not done, say beets are still not fork tender or beans are not tender, place the lid back on and bring up to pressure again (it is faster this time since the water is still hot) and cook for another minute or two, then let pressure release and check again. This can be caused by the type of heat source, your elevation, misread the time required, and the weight on the vent – meaning 12, 13, 14, or 15 pounds depending on your model of pressure cooker.

Stay near the pressure cooker. I have a Thai family, some are quite curious to see what I am cooking and are lid lifters. Since they cannot open the pressure cooker when it is locked up, I do not want them removing the weight, as that results in serious burns and the contents of the pot on your kitchen ceiling. So I stay near it when using it, I just go about prepping or cooking other items, and keep the family away from the cooker.

Once comfortable with using the pressure cooker and understanding how it works, then work your way to cooking an entire meal, say a stew for example.


Pressure Cookers I

This is a consolidation of information from a very informative website that has compiled data from several pressure cooker manufacturers as well as their own test. I use this site when I add pressure cooker recipes to the site.

Much of this information comes from a highly reliable source: https://www.hippressurecooking.com/

I have a good friend I get lots of advice from, as well as the tables on the link above. As I prepare items in my pressure cooker, I add what I find as a recipe. The following info is based on my stove top (old school) 9 liter (9 1/2 quart pressure cooker.

Some info on how a pressure cooker works:

1. Water at sea level boils at 100 C (212 F), a open pot sitting on your stove boiling water will not and cannot get any hotter than 100 C (212 F). As you go up in elevation, the temperature decreases .5 C (1 F) every 500 feet in altitude. At 8,000 feet, water boils at 92 C (197 F). (Science is amazing)

2. At sea level you have approximately 15 pounds (lbs) of pressure on you, and as you go higher in altitude, you have less pressure on you. The 15 lbs is what is called 1 Bar, bar is a measure for atmospheric pressure.

3. Stove top pressure cookers typically work in the range of 13 to 15 lbs of pressure. Some older models the weight used has different openings and can operate at 10 lbs which is considered low pressure, and 13 to 15 lbs is considered high pressure.

4. The increase of pressure, just as you might have guessed it, increases the temperature of water, and the water is not boiling when the cooker is at high pressure, food items can certainly be sticking out of the water or even on a steamer rack. The water in the pressure cooker at high pressure can reach 250 F, VERY HOT and results in serious burns if the cooker ruptures or vents to atmosphere rapidly.

5. Electric pressure cookers, by their design, operate at 10 to 12 lbs, foods cooked in those takes a few more minutes than a stove top pressure cooker.

6. Food is cooked faster with a pressure cooker, and keeps the flavor in the food, not boiled away like in a pot of water on the stove.

Safety with a stove top pressure cooker:

1. Pressure cookers are probably the most dangerous kitchen item ever invented, your model of pressure cooker should have an instruction book and a list of safety precautions.

2. The basic features of most stove top pressure cooker model today are:

  • Pressure vent. This is the working part that has a weight which maintains the constant pressure. The weight normally jiggles and turns as it vents. On my model I have a cover on the pressure vent that is slotted, I remove that cover and hold the vent to a light source and look through it before each use.
  • Seal vents. There is 1 to 2 vents, just slots on the lid that will relieve pressure if the seal (gasket) fails, such as it breaks. The slots will be normally opposite the handle and are designed to direct steam downward and away from you, so keep the handle pointed towards you. Before each use, remove the gasket and feel for cracks, if smooth all the way around, place it back in the lid and continue with what you are going to cook.
  • Soft plugs. Think of these as emergency relief valves. There is normally one or two of these devices on the lid, also away from the user. These can be a popup type that works with a spring or a physical plug that will blow out when the pressure is too high. If a soft plug blows out or lifts, it is very loud, and creates a lot of steam, and pretty much any liquid in the pot will come out of the soft plug. When the soft plugs release pressure the water will boil violently and is extremely hot as well as the steam.
  • Lid lock. On modern stove top models now, most have a device that will lock the lid when there is pressure inside the sealed vessel. Mine is a pin that lifts upward into the lid handle. Some are just a simple pin, some are colored. The main thing to be aware of if the pin is raised, it means there is pressure inside and the handle is locked. The raised pin is NOT an indicator of high pressure, just an indication there is pressure inside.
  • Level of contents. For items like rice, beans, pastas, no more than 1/2 full. The reason is these items swell or foam when cooking, ALWAYS add 1-2 tablespoons of oil to the pot as well to reduce the foaming, if foaming reaches the pressure vent it may block that (foam goes up the sides and across the lid). For items like meats, vegetables, no more than 2/3 full.
  • Use good charts for timing, such as the link at the top of this post or from recipes I have verified times on. Take notes on what works well for you.

Advantages using a stove top pressure cooker:

1. First, less time. Dry beans, soaked beans, whole frozen chicken, fork tender beef and pork, etc. There is Pressure Cooker sub-categories on many of the categories I have listed.

2. Flavor. The flavor stays in the food item, not simply boiled away like an open pot on the stove.

3. Less energy used. With less time, comes less energy. Think of it this way, beets. To cook beets on the stove in a pot of boiling water can take what, 30 minutes, 45 minutes? There is two factors that cause that, the amount of water you need to bring to a boil, and the water, at sea level, never gets hotter than 100 C (212 F). With my 9 1/2 quart pressure cooker, I add 1 1/2 cups of water and place the beets on the steamer tray, bring it up to pressure on high heat, does not take long to boil 1 1/2 cups of water, then the lid lock raises and the boiling stops another 1-2 minutes, at high pressure, then I turn the heat to low to maintain the pressure for 8 minutes, just 8 minutes.

4. Simplicity. With proper use, the only item to replace is the gasket, those are cheap, and some of my friends have operated their pressure cookers for many years with no failure with the gasket. If you lose the weight, that is easily replaced and low cost like the gasket. The advantage, you have a nice big thick walled pot to use without using the lid if you like. The electric models, just too many things to fail on those, and if you lose power, they cannot be used, unlike a stove top model.

about_pressure_cookers.txt · Last modified: 2022/12/18 23:19 by Lee Thayer

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