Remove pellicles and sinews, cut meat into bars.
Saute tomato paste, using part of oil.
Salt and pepper the meat, fry, coat with bouillon or water, add fried tomato paste, and stew lidded at low heat until no longer pink.
Fry flour, cool and dilute with part of the cooled bouillon where the meat was stewed in.
Cut onions into half-rings and saute in part of oil.
Cut potatoes into bars and fry until crusty.
Peel cucumbers and cut into stripes.
Add cucumbers, fried onions and bouillon, thicken up with flour, to the meat, stew for 10 minutes, add fried potatoes, peppercorn, bay leaf, and stew for another 20 minutes.
Add sliced tomatoes and ground garlic 5 minutes before is ready.
Serve the azu along with vegetables and sauce sprinkled with chopped greens.