In a large casserole, heat about 1/2” depth of oil, over medium to medium-high heat. Once hot, test the oil by dipping in a piece of tortilla or bread — if there are active and happy bubbles all around it, the oil is ready. If and when oil is ready, dip each of the stuffed and floured chiles into the egg batter, making sure that they are entirely covered in batter. Gently place them in the hot oil, trying to keep the side that was open or sealed with the toothpick facing up. Spoon some of the hot oil on top, so that it will seal the chile. Make as many as will fit in the casserole without overcrowding them. Fry for about 2 minutes per side, until golden brown. Make sure you flip them gently with a slotted spoon. Once ready, place on a paper covered drying rack or platter.