Rwandans mainly cook everything with a lot of salt and not much else. But it's super fresh so it tastes good straight up.
I did recently eat a local spinach dish cooked with tomatoes, onion, garlic, ground peanuts (powder) and handfuls of little 20mm salty fishies. Very tasty.
90p can get you a lot of lunch out here in Rwanda:
Spinach, pumpkin, sweet potato, pint of milk (also popular is the half pint of fresh yoghurt)