The Yule log is an ancient tradition that has its roots in celebrations of the winter solstice. Later it also began to have connotations with not only the light of the sun, but also the light of Christ, to give it religious symbolism.
In England, a log so large that it had to be dragged by horses would be brought into great country houses and burned for the twelve days of Christmas. A remnant of the log would be kept to light the next year's log. The lighting of the log on Christmas Eve would commence the celebrations of Christmas.
Please come back tomorrow for the final letter of the A-Z of Christmas, the letter Z.
Keeping Christmas in my heart all year round ~ Sandi