Worst: Jerky
Beef jerky is preserved with the use of salt and spices, so you might assume that it will stay fresh for a while. Sadly, the truth is that you have to put it in the fridge after opening it regardless of what meat it is. Most packages say that the jerky should be consumed within 3 days of opening and then refrigerated. Jerky will last just a week or two in the fridge. For that reason, it is better to just get smaller packages.

Jerky
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Worst: Hummus
We really doubt that you need all the hummus in a Costco-sized tub unless you plan to throw a huge party. Simply get a smaller container from the traditional grocery store to prevent wasting any food.

Hummus