Winterfair was a traditional Barrayaran holiday surrounding the winter solstice. Traditional foods for Winterfair included breads with cardamom and hot brillberry syrup.[1] Father Frost was believed to bring presents to children.[2][3]
The night of the solstice was marked by a ball at the Imperial Residence followed by midnight bonfires ("Bonfire Night")[4]. The following day was also a holiday; it was the first day of the new year (but not the fiscal year, as that was matched with the Emperor's Birthday).
Emperor Gregor held his betrothal ceremony on Winterfair[5], and Miles Vorkosigan held his wedding on the following one.[4]