For the noodles, boil 3-4 l salted water (approx. 1 teaspoon per litre). Cut bacon into small strips. Peel onion and garlic, dice finely. Cook noodles in boiling salted water according to package instructions.
Heat the oil in a pan. Fry the bacon until crispy. Fry onion and garlic briefly. Dust with flour, sweat lightly and deglaze with 1/4 l water and cream. Bring to the boil, simmer for 3-4 minutes.
Season to taste with salt, pepper, sugar, stock and 1-2 tablespoons lemon juice.
Wash the chives, shake dry. Tomatoes wash, halve. Heat up with the chives in the sauce for about 5 minutes.
Cut the avocado in half and remove the stone. Remove the flesh from the skin and cut into pieces. Sprinkle with 1 tablespoon lemon juice. Drain the pasta. Mix with avocado and sauce.