I’ve never tried a guava (guave? the spelling seems to vary everywhere) fruit, so don’t really know what it is supposed to taste like. This drink I can tell you about though. It has a non-descript slightly fruity taste which I can’t really compare to anything. I suppose it could be a mixture of all sorts of fruits watered down, much like a generic ‘fruit’ squash. It was nice, and being in a larger than normal can (330ml) gives you quite a kick, but I can’t say it would be top of my list to buy again.