Starting in December, some peoples celebrated Yule for a whole month, often up to three. People slaughtered animals, cooking the meat to enjoy with wine & ale. But, purposely, they saved the blood. Blood was used ritually to decorate the people & the statues of their gods & goddesses.
Other customs carried to the modern era included decorating homes with trees covered in candles, metal ornaments, & fruit, & caroling or wassailing, where wandering groups of singers were rewarded with warm mugs of cider or ale.