Japanese customers enjoy Yuzu citrus fruit in wintertime especially putting one in a hot bath

Picture: Japanese customers enjoy a hot bath in winter time

Yuzu fruit 

"Yuzu, a winter fruit, is too sharp to eat fresh because of its strong and penetrating aroma, but it has a variety of uses. For example, on the day of toji (winter solstice), yuzu-yu--taking a hot bath with yuzu floating in it--is customary."

Source: TASTE OF HOME

Yuzu in Osechi: Whip up fragrant, festive New Year's treat in NO time

Tamako Sakamoto

The Daily Yomiuri

Dec. 30, 2011

http://www.yomiuri.co.jp/dy/features/arts/T111221002570.htm