Wash the pork shanks. Peel onions, garlic, carrots and potatoes. Cut the carrots into slices, potatoes into cubes, and onions into large slices. Prepare a pressure cooker, blender and baking tray. Before slicing, place the onion in the freezer for a few minutes - after this procedure the vegetable will not irritate your eyes.
Cook the shanks in a pressure cooker. Place the drumsticks in the pressure cooker. Add onions, garlic cloves, chopped carrots and potatoes. Pour in wine and oil, add salt, paprika, black peppercorns, bay leaf and water. Cover the pan with a lid and cook the shanks for 1 hour over very low heat.
Finish cooking the pork knuckles in the oven. Place the shanks on a baking sheet. Grind the carrots, potatoes, garlic and onions with the remaining broth in a blender, pour the mixture over the meat and potatoes. Bake the dish for 35-40 minutes in an oven preheated to 180 degrees.
Serve the shanks, cooked in a pressure cooker and oven, with adjika and mustard.