1 can of fava beans (or you can soak 1/2 pound dry fava beans in water over night and then boil them for a couple of hours)
1 clove of garlic
2 tbsp olive oil
1/2 tsp salt
pepper flakes (only if you want in spicy)
juice of one lemon
some parsley, chopped finely or dill (it depends how much parsley or dill you want)
The only way I know to make fava paste is with a hand-blender or a food processor.
Put fava beans, garlic, olive oil, lemon juice, pepper flakes, and salt in the blender and let it do its magic. If the mix is too thick, you can add a little bit of water. Put fava paste in a bowl and garnish with parsley or dill.