Picture: Japanese customers enjoy a hot bath in winter time
"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
The Daily Yomiuri
Dec. 30, 2011