Margaret's Keftedes (Greek Meatballs)

INGREDIENTS

• 4 slices white bread, torn into pieces
• 2 tablespoons milk
• 1 clove garlic
• 1 onion, quartered
• 4 teaspoons dried mint
• 1 teaspoon salt
• ground black pepper to taste
• 1/2 pound ground beef
• 1/2 pound ground lamb
• 4 eggs
• 1/2 cup all-purpose flour for dredging
• vegetable oil for frying