Bean Soup with Potatoes

Ingredients

• 300 g Pork Knuckle
• 1 pc Onion
• 3 cloves Garlic
• 5 pcs Black pepper
• 5 pcs Allspice
• 3 pcs Bay leaves
• Salt
  to taste
• 2 cans Red Beans
• 3 pcs Potatoes
• 2 tbsp All-purpose flour
• 0.5 l Semi-skimmed milk