Peel and wash the carrots. Peel onions and garlic. Dice everything finely. Drain the lentils. Wash and chop the tomatoes. Bring 4-5 l salt water (1 teaspoon salt per litre) to the boil.
Fry the carrots, onions and garlic in hot oil. Add the lentils, tomatoes and vinegar and steam for about 10 minutes. Cook spaghetti in boiling water according to package instructions. Sort and wash the spinach, stir into the lentil vegetables and let it collapse.
Wash the lemon hot, dry it off, grate the peel thinly. Wash parsley, shake dry and chop. Drain the pasta and collect about 100 ml of cooking water. Add the noodles and cooking water to the lentil vegetables. Season to taste with salt and pepper. Crumble the ricotta over it, sprinkle with lemon peel and parsley.