Form 6 ice cream balls of the same size and place them on a tray with baking paper. Place in the freezer for at least 1 hour to firm up.
Once this time has passed, place a piece of plastic kitchen wrap on the clean countertop and place two slices of sponge cake or plain loaf bread on top.
Flatten or roll out the slices of bread with a rolling pin until they are approximately 0.11 inches (3 mm) thick (they must be thin to be able to cover the ice cream later).
Take a scoop of ice cream directly from the freezer, place it in the center of the flattened cake and wrap it with it until it is completely covered. Then wrap the entire scoop with the same plastic wrap and put it in the freezer again (this process must be done quickly to prevent the ice cream from melting).
Repeat the same process with the rest of the ice cream balls and let them sit again on the tray in the freezer for one more hour.
Once the ice cream has been resting for 15 minutes, place a large pot over medium heat with enough oil to deep fry the ice cream, that is, the entire scoop of ice cream should be able to fully be submerged in the oil and cooked at the same time.
Also, place in a medium bowl the flour with the egg and the water. Whisk with a hand whisk or a fork until you get a homogeneous and slightly liquid mixture.
When the oil is hot, about 392º F (200°C), take the ice cream balls out of the refrigerator and, two by two, roll them in the flour mixture and place them directly into the pan with the oil to fry for 30 seconds until lightly browned. As soon as they are ready, place them on a plate with blotting paper or kitchen towels to remove the excess oil.
Fry the rest of the ice cream in batches until everything is ready and eat right away. It can be served with chocolate sauce, dulce de leche, fruit or powdered sugar on top.