Occasionally at work, we'll have taste tests of different products. Once we taste tested peanut butter cups, and another time we tried root beer.

I'm trying to think of things we could try in the future, but there are a few restrictions:

-We want it to be a blind taste test, so it can't be easily identifiable after the packaging is removed.
-It should cater to the vegetarians at our company.
-It should stay good at room temperature for at least an hour.

The best thing I could think of is cheesecake. In general, it seems like desserts would be best.

Anyone have any other good suggestions?