Think of Braunschweiger like a delicate flower - it needs to be handled with care, and stored in a cool, dry place. If you leave it out at room temperature, it's like leaving a ice cream cone in the sun - it's going to melt, and not in a good way. By keeping it in the fridge, you're essentially putting it in a culinary coma, where it can rest peacefully until you're ready to use it again.
Now, I know what you're thinking - what about the sell-by date on the package? Well, that's more like a guideline than a hard and fast rule. It's like the expiration date on a carton of eggs - it's not a guarantee that the eggs will go bad on that exact date, but rather a suggestion to use them before they do. So, if you've got a container of Braunschweiger that's past its sell-by date, don't panic - just give it a sniff, and if it smells okay, it's probably still good to go.
What is Braunschweiger? | Jones Dairy Farm
But here's the thing - even if you store Braunschweiger perfectly, it will eventually go bad. It's like that old pair of jeans you've had since college - they might still be comfortable, but they're not getting any younger. After a few months, Braunschweiger can start to develop off-flavors, and even grow some nasty mold or bacteria. So, if you notice any of these signs, it's time to toss it, and start fresh with a new container.