Wash the meat, dab dry and if necessary remove some fat or skin. Cut meat into large pieces. Peel onion and garlic. Chop onion coarsely, chop garlic finely.
Wash mint, thyme and rosemary and shake dry. Pluck and chop the mint leaves, except for something to garnish. Heat the oil in a roasting pan and fry the meat thoroughly, turning it over. Finally add onion and garlic and fry briefly.
Season meat with salt and pepper. Add rosemary, thyme and mint and pour on broth. Bring to the boil, cover and stew for 1-1 1/4 hours. Then add frozen peas and braise for another 20-30 minutes.
Season the stewed stock with salt and pepper if necessary and serve in a large tureen. Garnish with mint. Serve with fresh baguette or white bread.