A gelatin roll form.
Jelly roll trays are typically distinguished by their composition and finish. The dimensions of gelatin trays are generally standardized at 15 – 17 inches (38.1 – 43.18 cm) in length, 10 – 14 inches (25.4 – 35.56 cm) in width and one inch (2.54 cm). cm) in depth. Constructed of stainless steel, aluminum or a combination, these pans are often available in a variety of finishes.
Jello buns typically use a thin sponge cake as a base.
Stainless steel jello pans are considered good but not perfect – at least not for perfect jello rolls. The reason the stainless steel pan is not ideal is because the fluffy cake can stick to the surface, causing it to tear during removal. Stainless steel pans with an aluminum surface are less likely to stick and are a much better choice.
Stainless steel is good, however, for distributing heat evenly to ensure even cooking, and it’s heavier, so it can last longer. Parchment paper is often used to line the bottom of stainless steel gelatin roll trays to ensure easy removal of contents. Bakers usually grease pans with butter, oil or fat and cover with parchment or parchment paper. This helps the finished cakes come off the pan cleanly and easily.
Some jello roll molds have a dark non-stick coating. While this coating is effective in preventing sticking, the dark surface can cause the cake to be overly browned. When using a baking sheet with a dark nonstick surface, users should monitor the cooking carefully to avoid browning too much. It’s important to use plastic utensils with these pans, as the metal can scratch the surface.
Jelly rolls are usually made from sponge cake because they tend to be very light and flexible. The dough is poured into prepared gelatin molds, which are usually greased and lined with parchment paper for best results. Pans should not be more than half full to avoid overflowing during cooking.
When removed from the oven, this cake is immediately removed from the pan and placed on a towel coated with powdered sugar. The parchment paper, if used, is removed, and the hot cake can be carefully wrapped with the towel around the narrow end. The rolled cake is placed on a wire rack until cool.
When the cake cools, it is rolled out and the towel is removed. Any jam used is normally whipped gently to soften before spreading over the cake. Other fillings, such as chocolate cream or whipped cream with fruit, can also be used. After spreading the filling all over the cake, up to the edges, it is rolled up carefully and sprinkled with icing sugar before serving.