Mince & black bean croquette

Ingredients

• 1 Onion, chopped
• 500 g Beef Mince
• 1 can Black Beans
• 5 Limes
• 2 Tomatoes
• 2 Red Onion
• 250 g Sour Cream
• 1/2 cup Coriander, chopped
• 1 tsp Jeera (Cumin) Seeds
• 3 tsp Taco Spice
• 100 g Butter/Margarine
• 1/3 cup Milk
• 4 Eggs
• 1 tsp Salt
• 1 tsp Ginger and Garlic Paste
• 2 tsp Lemon Juice
• 3 tbsp White Vinegar