There are a few ways to avoid double-dipping. One is to use the opposite end from the one you've bitten on. The other, should the dipping options exceed the available ends, is simply to have another. Surely Dimitri won't mind, right? He practically offered as much, after all...

That said, Shrike has never been skilled at deceit, including concealing his emotions. And that's especially true if he doesn't feel an imminent need to attempt to do so anyway. Which is to say, Dimitri can enjoy the variety of various curious, thoughtful, and appreciative expressions crossing the mage's face as he takes his time taste-testing each of the sauces.