Cut each eggroll wrapper into 8 pieces. The easier way to do this is to cut each sheet in half. Put both cuts together and cut them into 4 pieces. Then, mix the water with the cornstarch and set it aside.
Then, roll 4 pieces of the eggroll wrapper around a horn mold. Slightly wet your fingers in the cornstarch solution and wet a strip of the wrapper. Start wrapping the strip on the smallest part of the mold. Repeat the same process with all the strips. Each new strip should be wrapped around about the middle of the previous strip. Repeat the whole process until finished.
In a large pan, add your oil over medium-high heat. Add your molds to the hot oil and cook the wrappers for 20-30 seconds per side. Repeat the process to quickly put them in the oil, flip them, and remove the molds from the oil because they brown very fast. Use a cooking tong to remove the mold so it can be easier to drain the oil from the mold.
Let the cones cool for at least 5 minutes. Then, gently you need to turn the mold to release the cone. Repeat this process with all the cones. Store or serve and enjoy.
Notes
This recipe can also be made with the empanadilla dough, and the process remains the same.