The Slavic festival celebrated with pancakes and associated with the end of winter is Maslenitsa.
Maslenitsa is an Eastern Slavic folk and Christian holiday traditionally observed during the final week before Great Lent. Its best-known food is the blin or blini, a thin pancake whose round, golden shape is often understood as a symbol of the returning Sun. The festival combines feasting, visiting relatives, sleigh rides, games, and outdoor celebrations.
The holiday also preserves older seasonal customs. A straw effigy of Lady Maslenitsa may be dressed, paraded, and burned, symbolically bidding farewell to winter. In some traditions, its ashes are buried in the snow or fields to encourage fertility and a productive harvest.
Maslenitsa is not the same as Kupala, which is a summer festival associated with water, fire, and midsummer customs. Koliada belongs to the winter-solstice season, while Radonitsa is connected with remembrance of the dead. Because its date follows the movable Easter calendar, Maslenitsa falls on different dates each year.