Beans with Onions and Tomato

Ingredients

Steps

Slice the onion and cook it until brown.
Set half aside.
Slice the garlic.
Add it to the pan with the rest of the onions.
Add the chili and the rosemary as well. 
Strain the beans. 
Chop the tomatoes. 
Add both to the pan and 100ml of water.
Bring to a simmer and cook until the broth thickens.
Finish with the lemon zest and some parsley.
Add the rest of the onions.