So I've been cleaning out some things and I have a big box of Datrex emergency rations. These expired back in 2017 and Im debating to keep or toss them. Now these are vacuum sealed in a mylar bag so I feel they should be fine but this is what gets me about expiration dates. I feel like these expiration dates gives me a little fear in the back of my head that I will die if consumed 1 day after the expiration. Something sealed like this should be fine for several years after expiration? Ingredients are: wheat flour, vegetable shortening, cane sugar, water, cocount and salt. My concern is that the shortening is what will go bad more easily. What do you all think?