Part of the appeal of these tacos is the fact that they are deep fried. They're going to be a bit greasy, but you can eliminate as much of that excess grease as possible by making sure your oil is the right temperature before cooking. When you remove the tacos from the hot oil, place them in a pile of paper towels and squeeze out the excess grease. Let tacos drain on a taco lined plate while frying up the rest of the batch.