Classic lasagne recipe

Ingredients

• 1 large onion, peeled
• 1 large celery stick
• 2 carrots, peeled and trimmed
• 2 cloves of garlic, peeled
• 2 tbsp olive oil
• 700 g beef mince
• 3 tbsp milk
• 2 x 400g/14oz cans whole plum tomatoes in juice
• 2 tbsp tomato purée
• 150 ml strong beef stock
• 2 tbsp Worcestershire sauce
• 2 tsp dried oregano or Italian seasoning
• 700 ml milk
• 60 g butter
• 60 g plain flour
• 75 g freshly grated Parmesan
• 1 pinch freshly grated nutmeg
• 200 g dried lasagne sheets
• 1 handful fresh basil, to serve (optional)