Jamie's Classic Family Lasagne

Ingredients

• 2 sprigs fresh rosemary
• 100 g smoked streaky bacon
• olive oil
• 1 kg minced beef
• 1 kg minced pork
• 4 carrots
• 2 onions
• 4 sticks celery
• 2 heaped tbsp tomato puree
• 4 x 400 g tins plum tomatoes
• 350 g dried lasagne sheets
• 150 g mature Cheddar
• 2 medium leeks
• 2 fresh bay leaves
• 4 tbsp plain flour
• 1 litre semi-skimmed milk
• 1 whole nutmeg

Method

1. Chop the rosemary and bacon and fry them in olive oil.
2. Add the beef and pork mince and cook until the liquid has evaporated.
3. Finely chop the carrots, onions and celery and add them to the mince.
4. Cook until the vegetables have softened.
5. Add the tomato puree and plum tomatoes.
6. Add water from the tomato tins and simmer gently for about 2 hours.
7. Slice the leeks and cook them with the bay leaves.
8. Stir in the flour and milk and cook until the sauce thickens.
9. Blend the sauce until smooth.
10. Add half the Cheddar and grate in nutmeg.
11. Preheat the oven to 190 C.
12. Season the ragu.
13. Layer the ragu, white sauce and lasagne sheets in a deep dish.
14. Repeat the layers three times.
15. Finish with white sauce and the remaining Cheddar.
16. Bake for 45 minutes.
17. Rest for 5 to 10 minutes before serving.