Final answer:
The batter of the Cod burger can be made from different ingredients such as beer batter, cornmeal batter, panko breadcrumb batter, or tempura batter.
Step-by-step explanation:
The batter of the Cod burger can be made from different ingredients. One common option is a) beer batter, which is made by combining flour, beer, and other seasonings. Another option is c) cornmeal batter, where cornmeal is mixed with flour, egg, and spices. Finally, d) panko breadcrumb batter is made by dipping the cod in a mixture of breadcrumbs and spices before frying. Tempura batter, which is a lighter and crispier option made with flour and ice-cold water, can also be used. The choice will depend on personal preference and the desired texture of the final product.