Condiments In The Fridge

Ketchup

According to the USDA, unopened ketchup is safe to store in a pantry or cool cupboard indefinitely, with no need for refrigeration after opening, thanks to its acidic nature. However, you should use it within two months of being opened. To extend the life of your opened ketchup bottle, store it in the fridge for up to six months.

Mayonnaise

Americans love mayonnaise — the sandwich spread is consistently the top-selling condiment, beating ketchup, mustard, and other condiments. It might seem obvious that this fan favorite should be refrigerated since it contains eggs, but that’s not always the case. Hellmann’s says its jars can be left unrefrigerated for up to a month since the recipe includes vinegar and lemon juice that stunt bacterial growth. However, storing mayonnaise — especially fresh or preservative-free versions — in the fridge is still the best idea since it doubles its lifespan to two months and keeps the flavor tasting fresh.

Mustard

Mustard’s flavorful bite comes from vinegar, which helps keep this condiment fresh and bacteria-free, even if kept in the pantry. Mustard technically doesn’t need to be refrigerated and can last up to two months if stored at room temperature (salty and acidic varieties tend to last the longest). However, refrigeration can help any mustard — yellow, dijon, whole grain, or otherwise — stay fresh for up to a year.