Sweet-and-sour beet-and-apple relish is a blend of earthy red beets, tart Granny Smith apples, and onion, with a hint of Dijon mustard. It marries particularly well with cold chicken, gravlax, and smoked fish such as trout.
- 1 1/4 pounds small to medium red beets (4 or 5), washed well and patted dry
- 2 tablespoons extra-virgin olive oil
- Coarse salt and freshly ground pepper
- 1 small onion, thinly sliced
- 3 cups cider vinegar
- 1 1/2 cups water
- 1 1/2 cups sugar
- 4 Granny Smith apples, peeled and cut into 1/2- to 3/4-inch pieces
- 1/2 teaspoon Dijon mustard
Preheat oven to 400 degrees. Place beets on a sheet of parchment-lined foil; drizzle with oil. Season with salt and pepper. Fold edges to form a packet. Place on a baking sheet, and roast beets until tender, about 1 hour. Unwrap; let cool slightly, then peel. Cut into 1/2-inch pieces.
Bring onion, vinegar, water, and sugar to a simmer in a medium saucepan over medium heat. Cook until sugar dissolves, about 3 minutes. Remove from heat, and stir in beets, apples, and mustard.
Divide among 3 pint-size sterilized glass jars using a slotted spoon, leaving 1/4-inch headspace at tops. Wipe rims and then close with screw bands and lids.
Submerge jars, covering with water by 2 inches, upright on a wire rack in a large pot of hot water; bring to a boil. Boil for 15 minutes (or longer, depending on altitude). Remove jars from pot using tongs, and transfer to a layer of clean towels to cool. Once cool, check for a slight indentation in lids, which indicates a vacuum seal. Refrigerate all canned products after opening.