This recipe originated in the state of Bahia, Brazil. It's an adapted ''cooler'' version which my family loves instead of the ''hot'' pepper version. This recipe is always a success; however I hesitated a lot to put it on the Zaar because the consistency and the cooking time of the cassava can vary a lot and I don't know which type you will find where you live. I always compensate by using more or less coconut milk. This recipe is definitely not for beginners. I finally decided to post when Jan S requested it for her Brazilian night. Optional: I cook about 2 cups of well washed shrimp shells and heads (black eyes removed) with 3 tablespoons of onion, 2 cups of water for about 10/15 minutes. Drain and save the water. Put through food processor using as little water as possible. Sieve and reserve. Add about 1/2 cup right after you cooked the tomatoes but before you put the shrimp in; cook a couple of minutes. It adds great flavor. Original Brazilian recipe calls for fresh Cilantro leaves instead of parsley, I prefer parsley. It also calls for 1/2 cup of dende oil which my family doesn't like, I use corn and olive oils. However, as the dende oil gives the dish a nice light orange color, I use some drops of food coloring (any Brazilian reading this, forgive me, but it works). Cassava: some will cook very quickly, others may be tougher and you will need to cook in a pressure cooker for about 15 minutes. When selecting the cassava, look for the ones that the skin will come off easily when pulled, they are usually the soft kind.