Taken from cakespy so it is easier to make (not my recipe)
Balancing crisp textures with frozen fillings requires careful temperature management, particularly when dealing with thin batters that cook rapidly on a hot surface. Whisking eggs and sugar until thoroughly frothy introduces the mechanical aeration necessary to create a batter that spreads into a thin, five-inch circle without tearing during the flip. Cooking each side for roughly one minute on medium-high heat yields a pliable crepe-like round that must be shaped immediately while thermal energy remains high. Draping the freshly cooked rounds over the handle of a wooden spoon establishes the structural curve, but inserting a wadded piece of tinfoil or a halved toothpick prevents the edges from collapsing inward as the structure cools.
Coating the interior of the cooled shells with melted chocolate and shortening acts as a moisture barrier, protecting the delicate pastry from the water content in the ice cream. Shortening is added to the chocolate to lower the melting point and ensure a smooth consistency that brushes evenly without pulling at the delicate cookie wall. After applying the chocolate lining, chilling the shells for one hour allows the fats to solidify completely, creating a rigid barrier that resists sogging. Freezing assembled tacos wrapped securely in waxed paper extends the storage window, permitting advanced preparation days before a gathering. Ice cream should be scooped firmly into the set chocolate lining, then topped with shredded coconut dyed green to mimic grass alongside various candies. Rice pudding studded with jelly beans makes a traditional accompaniment, adding a contrasting dairy texture on the side.