Remove casings from the sausages and break up and put in a pot.
Turn on heat to medium and let sausages fry.
Add the onions. Let fry till softened.
Add the garlic, chilies, and mushrooms. Mix well.
Deglaze the pot with the vinegar. Stir to make sure you get all the brown bits - that's all flavour.
Add the spinach and let wilt.
Add the baked beans. Fill one can up half way with water and add to the pot. Mix well.
Add salt and pepper if needed.
Reduce heat to low and let simmer for 15 minutes.
Serve with toast.