The duration required for grilling ears of maize, encased in a metallic wrap, over an open flame is a critical factor in achieving optimal texture and flavor. This process involves indirect heat transfer, ensuring the kernels cook evenly while retaining moisture. Preparation often includes removing the silk and optionally applying butter or seasonings before sealing the maize in foil.
Proper timing prevents the kernels from becoming either undercooked and starchy or overcooked and dry. Enclosing the corn in foil helps to steam the kernels, enhancing their natural sweetness and preventing charring. This cooking method is frequently employed due to its simplicity, convenience, and consistent results, especially when grilling for large groups.