SAUTE THE ONION in a non-stick pan, or in a little butter until tender. If you want the chili hot, saute with the chili powder. When the onions are limp, add the beef, and brown, breaking up with a spoon. (Drain if you like). Add puree, paste, chili powder if you didn't brown it, beans, and 16 oz. water. And salt & pepper if you like it. Cover and simmer over low heat for 2 hrs., stirring occasionally.