O is for

Oranges, satsumas, clementines and various citrus fruit.

By http://www.flickr.com/photos/calliope/ 
(http://www.flickr.com/photos/calliope...) 
[CC BY 2.0 (http://creativecommons.org/licenses/b...)], 
via Wikimedia CommonsI love small sweet easy-peel citrus and eat as many as I can in the short period before they become too tart or dry out.

But think back, why was there always a satsuma your Christmas stocking on Christmas day.
As with many of these traditions there is often...