what are the dimensions of a half sheet cake pan
Sheet pan Professional sheet pans used in commercial kitchens typically are made of aluminum, with a 1 in (2.5 cm) raised lip around the edge, and in the United States come in standard sizes.[1] The full-size sheet pan is 26 by 18 in (66 by 46 cm), which is too large for most home ovens. A two thirds sheet pan (also referred to as a three quarter size sheet pan) is 21 by 15 in (53 by 38 cm).[2][3] A half sheet pan is 18 by 13 in (46 by 33 cm); quarter sheets are 9 by 13 in (23 by 33 cm). The half sheet is approximately the same size as mass-market baking sheets found in supermarkets, and the quarter sheet is a common size for rectangular, single-layer cakes. Other commercial kitchen equipment, such as cooling racks, ovens, and shelving, is made to fit these standard pans.
Sponge cake The Victoria sponge, also known as the Victoria sandwich or Victorian cake,[12] was named after Queen Victoria, who was known to enjoy a slice of the sponge cake with her afternoon tea. The sponge part evolved from the classic pound cake â€“ equal quantities of butter, sugar, eggs and flour. The difference was the Victorian creation of baking powder, which was discovered by English food manufacturer Alfred Bird in 1843, which enabled the sponge to rise higher.[13][14] This invention, writes cookery author Felicity Cloake, "was celebrated with a patriotic cake", Victoria sponge.[13]