Melt butter in large rondeau. Saute all vegetables at medium heat until tender. Stir in cream and ketchup. Cook 5 minutes. Let cool completely.
Mix all ingredients in hobart with paddle for ten minutes at speed two. Divide into 4 inch pans lined with parchment paper 5 lb. 12 oz. per pan, 1/3 inch high.
Cook at 325 degrees for 2 hours, internal temperature at 160 degrees. Let set at room temperature for approximately 10 minutes then drain grease. Let stand longer (approx. 2 hours) and then drain remaining grease.