Squash the cooked black beans with a potato masher. Remember to drain the water before mashing the beans because we want them to stay as dry as possible.
Pour the cornflour and a pinch of salt into a separate bowl. To prevent huaraches from breaking, you can add a bit of wheat flour to the mix. Then, add the warm water with one hand, and mix slowly with the other hand.
Incorporate the masa and mix until it's soft and doesn't stick to the bowl.
To form the huaraches, try to keep your hands wet. This will make it a lot easier.
Shape the masa into an oval-like figure. Then make a dent in the middle to fill it with black beans and requesón. Close the huarache wrapping the filling from both sides and pinching the edges.
Put the huarache over a board covered with plastic wrap, so you can flatten the huarache. Press it using plastic wrap on top too. You can use a tortilla press if you want.
Add a bit of oil to a preheated pan and cook the huarache for each side until you get a light-brown crust.
While cooking, sprinkle some water over the huarache to keep it moistened.
Remove the huarache from the pan and make small holes with the back of a knife to decorate. Additionally, this adds nice crispiness when you fry them.
Melt lard in a pan and fry well the huaraches for both sides. In the meantime, you can cook your beef steak.
Put the huaraches on a plate with a paper towel to remove the excess oil.
Transfer the huaraches to the serving platter. Cover each with your favorite salsa. Then, add the beef, and top with chopped onions and grated cheese.
If you want to try a meatless option, you can add salsa and top with avocado, grated cheese, and chopped onions. A bit of cilantro matches nicely with this option.
And now, enjoy!