The dish of fava beans with tomatoes is so straightforward and simple to prepare that I bet it will quickly become your go-to fava recipe.
Empty the fava beans with their water into a pot. Bring to a boil then simmer on medium heat for 3-5 minutes. Do not cover.
Put the boiled fava beans with some of their water in a serving bowl. Add the lemon juice, olive oil, chopped onion and most of the tomato (leave a bit on the side for garnish). Add all the crushed garlic and salt and mix.