Mustard
Just like ketchup, if it is outside the refrigerator, mustard can also last longer. Mustard comes with a natural acid that acts as a preservative. That’s why we can store mustard even longer than ketchup.
Soy Sauce
Were you aware that soy sauce will remain edible for about one year and six months? It seems like a short time, but it’s the fact that soy sauce can do exactly that in the pantry. However, you should know that it can change its flavor after a long time, but it should be fine.