Lamb shanks on creamy polenta

Ingredients

• 2 lamb shanks(trimmed, ask your butcher)
• a little flour
• salt and pepper
• 250ml chopped tomatoes(I used tinned)
• a sprig of rosemary
• a sprig of thyme
• 125ml red wine
• 1 tsp sugar
• 4 cloves garlic
• zest and juice of a lemon
• 1/2 a chili, finely chopped
• 1/2 tsp dried rosemary
• 1/2 tsp dried coriander - dry fried and crushed