Let boil for 2 hours. You can make vegetable soup or cream with the veggies and a bit of the stock.
Blend the tomatoes with a bit of the stock and reserve.
In a pot on high heat puta bit of olive oil to sear the chicken until the pieces are nice and golden. Remember not to fill up the pan; only put enough chicken pieces to fill up the base. Also don't move them around constantly; lay them on one of their sides and give them 1 or 2 minutes to become golden without moving them and then rotate it. Once the first batch is ready take it out and continue with the rest.
Use the water that is released by the onions to scrape out the burnt bits of chicken on the pan because they have a lot of flavour in them. Cook the onion until it's soft and translucent and you don't feel that strong smell that it had at the start.
Add the garlic, tomato paste and paprika and cook for another minute.
Add the blended tomato, the rest of the litre of chicken stock, the chicken, mushrooms and the red wine. Bring everything to a bowl and regulate the heat (low to medium-low depending on your stove) so that we only see a few bubbles on the surface. This is what keeps the chicken nice and tender.
Cook with a lid on for half an hour. Remember that you don't have to look over it as it cooks ;).
At the very end add the peas and cook for barely 2min so they don't go dark.
Serve immediately on its own or with a side of rice, quinoa or cous cous.