I tried a sample of Vegan Cheese once and it immediately brought to mind Arthur Dent trying to get Tea out of the Nutrimatic. It was something almost but not quite completely unlike cheese. It made me wonder if the person who invented it had ever tasted cheese before or had just read about it in a book or something.

If it had been something I bought from the store I might have thought it just had a short shelf life, but this was a sample from the vendor at a trade show. I tried it on the spot. Presumably it was as good as it was going to get. Also, that vendor was a complete jerk and set up their booth as far away from the water fountains as possible, so I was forced to hold that horrendous not-cheese taste in my mouth for several minutes while I rushed across the floor.