This is casein glue like the white glue we all use in school ( kind of)

1. Add vinegar to lukewarm skimmed milk so it curdles.
2. Drain the liquid component off from the solids.
3. Put solids onto a strainer to drain off excess liquid
4. In a bowl, add a base (such as sodium bicarbonate, ammonia or washing soda) to the curds, bit by bit, until they change into a creamy mixture. You now have casein glue.
Note that what you have at step 2 is low fat cottage cheese, so this can be used instead, skipping step 1.

This preparation lacks the antimicrobial present in commercial glue, so will spoil in storage. It may be frozen in ice cube trays for later use, or made when wanted.

These were not even close to military spec. In fact probably expired when I got them.

I bought them a long time ago. They were supposed to be Military M.R.E. With heaters. if they were sold as camping or some other kind of M.R.E. then that would be ok. But they said 100% military issue. I think they were expired M.R.E.’s and repackaged then sold as new.