A Yule log can be made in advance to help ease preparations for holiday festivities. Depending on the recipe and ingredients used, a Yule log can typically be made up to several days prior to serving it. It's important to store it properly in order to maintain its freshness and taste. Once assembled and decorated, it should be refrigerated to keep it moist and prevent any fillings from spoiling. Wrapping it tightly in plastic wrap or storing it in an airtight container will help preserve its quality until it is ready to be enjoyed. However, if you're using perishable ingredients like fresh cream or fruit fillings needing longer shelf life, make sure to check individual recipes for specific recommendations on how far in advance they can be prepared safely without compromising taste or texture.