“Use By” vs. “Expires On”: What Those Dates on Your Groceries Really Mean Fast, Cheap, and Smarter Shopping with Delulu’s Deals Ever grabbed a yogurt from the fridge, saw the date printed on the lid, and wondered, “Is this still good?” You’re not alone. Food date labels can be confusing — and let’s be honest, … “Use By” vs. “Expires On”: What Those Dates on Your Groceries Really Mean