Veal Cheeseburgers with Ranch Sauce - Trusted Veal from Europe

Ingredients

• 125 ml (½ cup) mayonnaise
• 60 ml (¼ cup) sour cream
• 30 ml (2 tbsp.) fresh herbs (dill, chives, parsley), chopped
• Juice of ¼ lemon
• 15 ml (1 tbsp.) olive oil
• 1 onion, sliced
• 500 ml (2 cups) cremini mushrooms, sliced
• 5 ml (1 tsp.) fresh thyme
• 800 g ground veal in 4 meatballs
• 4 slices of aged cheddar
• 4 hamburger buns