This sauce is inspired from a senegalese dish.
Cut 1 1/2 big onion and heat in vegetal oil until it become transparent and lightly brown, but not burned.
Add one squashed clove garlic, 3 teaspoon of peanut butter, 3 teaspoon of tomato purée and some water to diluate.
Add pepper, a very little paprika. Add done sweet potato, carots, turnip, yam…
Serve with rice. You can also add fried tofu in the sauce.