Taunting Donut is a very small and simple game with a few and easy puzzles.
I assume it's aimed at beginners and should be pretty entertaining for those not too familiar with IF. There are only a few puzzles that need to be solved and the game itself offers enough to drive the player into the right direction. Playtime is somewhere around 5 minutes I guess.
It's well written with enough detail to keep you interested in the story. The ending is a bit simple; I expected a kind of twist which didn't come. A few bugs are still in it, but nothing too serious.