Season steak on both sides with salt, pepper and thyme to taste.

Place white onion, garlic and green onion in a glass baking dish or a large glass container. Place the steak over the bed of onions and then pour the beer over it. Cover it with plastic wrap and store it in the fridge for at least four hours, preferably overnight. (I also turn it over halfway through marinating to make sure both sides of the steak are covered with the beer).

The next day cut the steak into 4-5 portions and place it in a pressure cooker. Discard the liquid of the marinade and place the onions and garlic in the pot. cover the steak with enough water. Close the pressure cooker, bring to pressure over high heat, then lower to low to medium-low heat and cook for about 1½ hour. If using a regular pot, bring to a boil over high heat, then lower to low to medium-low and cook for about 3 hours or until the beef is tender.

Pre-heat oven to 350ºF (180ºC)

Place the cooked steak in a baking dish. Season with a little bit more salt and place bread crumbs on top of each piece of steak. The amount of bread crumbs depends on each person's taste. You can also pour more beer into the baking dish to add more more moisture to the beef. Bake for about 15 minutes or until the bread crumbs are a bit golden brown. You can serve it with a side of salted potatoes and a Colombian simple salad