Rinse the cuttlefish. Fill a pot about half full of water, add the shallots and bring to a boil.
When the water is boiling, add the cuttlefish. After about 5 minutes the cuttle bones come out (those are the white objects floating at the back of the pot, there is one in each cuttlefish) reduce heat to a simmer and cook for another 5 minutes or until tender. Taste the broth (it is black) and adjust taste with salt as desired.
Typically served over rice with some broth.
Notes
The cuttlefish cost me 80 Baht/kilo. For 4 servings, this is about 60 cents per serving.