On January 14th, National Undhiyu Day is observed, dedicated to celebrating Undhiyu, a distinctive mixed vegetable dish that holds a special place in the culinary tradition of the Gujarati people in India. The dish derives its name from the Gujarati word "undhu," signifying "upside down."

Undhiyu, crafted with a medley of seasonal vegetables, is a winter delicacy enjoyed, especially during Uttarayan, the kite festival, in households throughout the state. As a tradition, Gujaratis prepare Undhiyu on Makar Sankrant, contributing to the designation of January 14th as National Undhiyu Day.