Combine chopped garlic with salt, pepper, and vinegar in a bowl, mix thoroughly, and set aside.
Next, use a knife to make holes in the meat and fill them with the mixture.
Put all the meat and let it rest for at least 1 hour. After you put the pressure cooker on the heat with oil, let it heat up. Then, chop the onions and stir them occasionally.
Now, here's the trick: the onion should be cooked until it's almost burnt. That's when you add the meat to the pot and cook it under pressure.
Wait for 10 minutes, remove the wrapping, pour in 1 cup of water, and cook for 40 minutes. If the meat is soft, reduce the heat and cook it for a longer time until it's done.
