It is simple to make and to me, tasty and filling, too. For two or three servings.
Smash some cloves of garlic, sauteé with 1 tbsp of oil until fragrant using low heat. Add 1 cup of chopped celery (I like my celery to be tender, if you prefer it crisp, add tuna first). Then, add a can of tuna (I used the one with brine instead of vegetable oil). Blend well and simmer for a couple of minutes.
I prefer to eat it with steamed rice, but pasta would be nice as well.