What if you don't have zest from lemon for cranberry sauce?

If you don't have lemon zest for your cranberry sauce, you can substitute with a small amount of lemon juice to add acidity and brightness. Alternatively, try using orange zest or juice for a different citrus flavor that complements the cranberries well. If you prefer not to use citrus at all, adding a splash of vinegar or a bit of Apple cider can also enhance the sauce's flavor. Adjust the sweetness to balance any tartness from the substitutions.