The Best Potato Soup

Ingredients

• 1 kg of beef bones
• 12 cups of water
• 2/3 cup of flour
• 1 onion
• 1 carrot
• 1 celery
• 3 potatoes
• 50 g butter
• 2 bay leaves
• Salt
• Black Pepper
• 4 slices of rusk or toast
• 2 tsp dried mint
• 2 tsp red pepper powder
• 15 g butter