Homemade eggnog is a tasty holiday libation for your whole family. Making a batch of this delicious homemade eggnog will put your child’s understanding of measurements and following step-by-step instructions to the test. Translated, eggnog means, “egg inside a cup,” and its origins are debated. However, it probably comes from a British drink called posset. Posset was made of eggs, hot milk and wine or other spirits. Make homemade eggnog with your child this holiday season.