Drain the beans in a colander. Soak the toast in milk. If necessary, dab the beans and chop them roughly with a blender or hand blender. Finely dice the onions and garlic. Chop the parsley and squeeze out the toast. Mix well with the rest of the ingredients in a bowl. Season to taste with salt, pepper and Tabasco. If the mixture is too soft, add starch and breadcrumbs if necessary.
Heat the oil on a medium-high heat. Shape the bean mixture into 12 meatballs with your hands and carefully place in the hot pan. Turn and serve after approx. 1 - 2 minutes or the desired degree of browning.