These are so convenient for making bite sized snacks. I opened a can of chili tuna I got from a Korean grocery store and just stuffed a spoonful each into a mini pita with a baby romaine lettuce leaf. The lettuce prevents the juice of the canned tuna from soaking through the pita too quickly. The plate of 5 mini pita sandwiches took about 2 minutes to make and is enough for me as a full meal. This should work with any sliced deli meat, egg salad, chicken salad, etc.I did not see any best by dates on the packaging but it tastes fresh. Similar to bread that I get from the bakery (also without best by dates) it would probably need to be refrigerated if you don’t eat it all in the first 2-3 says after you receive the delivery.My favorite part about using these mini pitas is they don’t leak on the bottom if you don’t cut it open or fill it with too much liquid. I hate it when sandwiches drip.