I bought one of these my first year, in Korea. There are some places around that sell American military items, not really the interesting stuff I'm looking for, but they do have some vegetarian meal pouches!
This is the first one I tried, cheese tortellini, menu no. 13:
It was good, not amazing, but it's a vegetarian, military meal pouch, my expectations weren't high.
Now, about two years later, I decided to give another vegetarian meal pouch a try, this time, lasagna:
I'm not crazy about canned fruit, so I figured it was best to skip the fruit pouch. But I did try the peanut butter and crackers.
So, it's probably not for everyone, or pretty much all non-military people. But when it's only 5,000 won, less than $5, and says vegetarian on it, it's hard to pass up. It's like those small surprise bags of candy I remember seeing as a kid. I knew that if I picked out what I wanted, for the same price the surprise packs cost, I would have more of what I liked. But it was always too hard turning down the surprise. This is like the surprise pack for vegetarian adults.