In a bowl, crumble both cheeses with your fingers, once you have done this, set aside.
Then, in another bowl, mix the colmaíz with the starch, once done add the cheeses and mix with your hands.
Also add the sugar, the egg and a little bit of water or milk and knead.
Beware, add the milk or water little by little, remember that the dough should not become too moist.
Once you have kneaded well, and everything is integrated, start heating the oil. Meanwhile, start forming balls with the dough.
To test the oil's temperature, place a small ball of the dough and it should rise in 4 seconds, if it takes longer it's cold, and if it rises sooner it's because it's too hot.
Once the temperature is right, place the buñuelo balls in the oil, and let them fry. The buñuelos will turn over on their own, once they stop and are golden, remove and drain. And done.