Bavarian Spaghetti Bolognese

Ingredients:
For the sauce
500 g ground beef
2 tbs olive oil
1 onion, chopped
2 stalks celery, chopped
1 carrot, chopped
750 g tomato, cut into 4
2 tbs tomato paste
50 ml white wine
250 ml chicken stock
1 bay leaf
2 cloves garlic, minced
1/2 tsp dried oregano
1/2 tsp lemon zest
1 tsp sugar
salt & pepper
Chilli powder (optional)

For the noodle
400 gr spaghetti
100 ml chicken stock
2 tbs virgin olive oil
salt & pepper

1. For the sauce; Heat 2 tbs olive, add the onion and the vegetables. Cook until the onion are soft and have a glossy look. 
2. Add the beef, cook it until brown. Add the tomato paste, mix it well. Pour in the white wine and cook it for 5 until 10 minutes.
3. Add the tomato and chicken stock, cook it for about 2 hours. Stir occasionally, 15 minutes before  finish add the bay leaf, garlic, chilli powder, sugar, salt and pepper. 
4. For the noodle; In a boiling water add the pasta, cook until al dente. In a big bowl mix the noodle, chicken stock, olive oil and season it with salt and pepper.