Boil frozen mixed vegetables and broccoli (chopped fine). Set aside to drain. Fry bacon until crispy. Set aside bacon. Pour enough bacon grease in soup pan to cover bottom of pan. Simmer onions until clear. Mix 1/4 cup flour. Then add 4 cups milk. Stir well. Add vegetables and bacon. Simmer until soup is thickened. Salt and pepper to taste. This soup has better flavor when eaten the next day.