Drizzle around 1 tbsp olive oil into a large pot over medium heat. Add beef, break it up with a wooden spoon and season with a pinch of salt and pepper. Continue to fry until fully browned, then pour into your lasagne dish (discarding any excess fat).
Add Pancetta and fry until it releases fat and begins to brown. Add onion, celery and carrot, and continue frying until they soften and begin to brown. Add garlic at the last minute, then add your tomato puree (tomato paste).
Fry tomato puree for a few mins, then deglaze with your wine. Allow the wine to reduce for a few mins, then add back in your beef. Stir to coat beef.
Pour in your beef stock, tomato passata, parsley, basil, oregano, bay leaves, 1 tsp sugar, salt & pepper (to taste). Turn heat to low, pop on a lid and allow to simmer for at least 1 hour 30 mins, stirring occasionally. Then take off lid and allow the sauce to reduce, another 20-30mins should be fine. Meanwhile...