Use these sweet-and-sour pickles to make our Potato-and-Pickled-Beet Salad. They also make a delectable snack straight out of the fridge.
Preheat oven to 400 degrees. Wrap beets in parchment-lined foil and bake until tender when pierced with the tip of a knife, about 1 hour. Let stand until cool enough to handle. Using a paper towel, rub off skins. Cut beets into 1-inch wedges.
Combine vinegar, 1/4 cup water, sugar, celery seed, peppercorns, coriander, turmeric, and 1 tablespoon salt in a medium saucepan. Bring to a boil. Add beets and onion; return to a simmer, then transfer to a clean jar and let cool to room temperature. Seal and refrigerate at least 1 day and up to 2 months.