In ancient Greece, kitchens were equipped with built-in fruit and vegetable storage systems called 'pithoi'. Pithoi were large ceramic jars that were buried in the ground or built into the walls of the kitchen. These jars had a narrow neck and a wide body, allowing for easy storage of fruits and vegetables. The pithoi were sealed with a lid to keep the produce fresh and protected from pests. This storage system was widely used in ancient Greek households and played a crucial role in preserving food for extended periods of time.