For the tuna, if using canned in olive oil, 185 grams each can (5-6 oz each can) or 250 grams fresh cooked.
Dice the onion and splash just a bit of the lime juice on them and toss together, this will cut back on some of the strong flavor of the onion. Set aside.
Drain the cans of tuna, or drain fresh cooked if needed. Add the tuna to a large mixing bowl, add drained beans, and add remaining ingredients. (I used chickpeas this time that I cooked in a pressure cooker.)
Gently mix together.
Taste, if dry, mix in some olive oil to get the desired consistency. Season with salt, Tabasco or red pepper flakes as desired.
Cover tightly and place in the fridge to chill and to allow the flavors to blend.
Serve as a light meal for lunch or dinner or as a side dish. Enjoy.