Creamy, tangy and sometimes sweet, yogurt is the refrigerator staple we reach for on the regular. Delicious as a quick snack, the foundation for a healthy breakfast, a cooling condiment for spicy and savory dishes (like this scrumptious couscous) and even in some of our favorite creamy desserts, yogurt might just be the most versatile ingredient in our fridge. But what sets yogurt apart is that it’s also really good for you: This protein-packed dairy product is rich with nutrients, and it contains strains of bacteria and yeast (i.e., probiotics) that promote digestive health. So yeah, we’re pretty big fans of the stuff. That said, we sometimes buy more yogurt than we can finish in a week. So what we really want to know is: Does yogurt go bad? Spoiler: The answer to that question is yes, but there’s more to it than that. Read on for everything you need to know about yogurt and food safety so you can make the most of the delicious dairy you’ve got in the fridge.