Chop onion and garlic. Peel, seed and chop tomatoes. Chop coriander and process with a blender/food processor/immersion blender with enough water to make a runny paste (2 - 4 tablespoons).
Dry chicken wings with a paper towel and season with salt and pepper. Heat 1 tablespoon of fat in a big pot (if your pot isn't big enough, use 2) and brown the wings. Reserve.
Rinse mussels.
Dial down the heat, add another tablespoon of fat and cook onion, garlic, chilli, tomatoes and coriander for 15 - 20 minutes.
Add wings, mussels and stock. Bring to a boil and cook at medium heat until the chicken is fully cooked (about 20 minutes).
In the meantime, boil cassava until soft (about 20 minutes), drain and reserve.
Chop the cauliflower florets with a knife. You want small pieces but not as small as the ones you get with a food processor.
Dice pumpkin, parsnip and carrot. Chop green beans in small chunks (about 1 cm long). Slice capsicum.
Add cauliflower, pumpkin, swedes or parsnips, carrots, green beans and capsicum to the pot. Season with salt and pepper, stir and let cook for 15 - 20 minutes.
Add the cassava and serve.