To bypass this issue, consider refilling your old ketchup bottles with your homemade sauce of choice. This way, you'll have a ...
of equally salty ketchup. The marriage of sweet and tangy can make it easy for diners to overeat the condiment -- and as we know by now, that can lead to an increased intake of sugar and sodium.
Ketchup will last longer when stored in the fridge, but its high sugar and vinegar content means it isn't necessary for short periods of time.
From cleaning and polishing to helping with personal care fixes, ketchup can do so much more than just top your food.