Keftethes - greek meatballs recipe

Ingredients

• 4 slices bread, white or wheat or whole grain - or Bread crumbs - they?re easier.If you use bread, trim the crusts.
• 1 pound ground beef
• 1 egg
• 1 medium onion chopped fine.
• 1 tablespoons . crushed mint
• salt and pepper to taste
• some flour
• 2 tablespoons butter. 2 tablespoons olive oil.