Quick Pickled Turnips

Layer turnips, onion and garlic in a quart jar (or similar 4-cup container) with a lid.

Whisk vinegar, hot water, sugar, peppercorns, salt and crushed red pepper (if using) in a medium bowl until the sugar is mostly dissolved. Pour the mixture over the vegetables. Put the lid on and gently shake a few times to distribute the flavorings. Refrigerate for at least 30 minutes for the flavors to develop.