Homemade eggnog can be a delicious thing, enriched with fresh eggs and cream, a careful grating of nutmeg, and just the right amount of sugar. (Plus a dunked cookie or two.) But mixing it up yourself can seem a little daunting (and holiday entertaining already has you frazzled). So you're just going to pick up a carton at the grocery store. But which brand should you buy? We recently conducted a blind taste test to figure out which is the best nationally-available brand of premade eggnog.