Aztec kitchens were practical and efficient, and some of them incorporated built-in wine racks. These kitchens were typically small and had a central cooking area. The built-in wine racks were often made of stone or clay and were used to store and age wine. Wine was an important part of Aztec ceremonies and celebrations, and having a built-in wine rack in the kitchen was a way to honor the gods and enjoy wine during festive occasions.