Hot Cumin-Pickled Summer Squash
Number of Servings
Makes about 7 pint jars
Ingredients
  • 4 pounds yellow summer squash or zucchini
  • 8 ounces sweet onion (about 1 medium)
  • [q:1/4] cup plus 1 Tbsp pure kosher salt
  • 2 tablespoons cumin seeds
  • 1 tablespoon yellow mustard seeds
  • 1 tablespoon hot red pepper flakes
  • 1 teaspoon ground cumin
  • 6 cups cider vinegar (5% acidity)
  • 2 tablespoons mild honey
  • 7 cloves garlic
  • 7 small fresh serrano chiles
Directions
  1. Scrub the squash and cut it into [q:1/4] inch rounds. Cut the onion in half lengthwise and thinly slice it into half-circles. Put the squash and onion in a large bowl and sprinkle with the [q:1/4] cup salt, tossing to combine. Cover with a layer of ice cubes and refrigerate for 8 hours or overnight. Pick out any unmelted ice, drain well, and rinse under cold running water. Toss with the cumin seeds, mustard seeds, red pepper flakes, and ground cumin and set aside.
  2. Prepare for water-bath canning: Wash the jars and keep them hot in the canning pot, and put the flat lids in a heatproof bowl.
  3. In a nonreactive pot, combine the vinegar, [q:1 1/2] cups water, the honey, and the remaining 1 tablespoon salt. Bring to a boil.
  4. Ladle boiling water from the canning pot into the bowl with the lids. Using a jar lifter, remove the hot jars from the canning pot, carefully pouring the water from each one back into the pot, and place them upright on a folded towel. Drain the water off the jar lids.
  5. Working quickly, pack the squash, onion, garlic, and chiles into the jars (not too tightly). Ladle the hot vinegar mixture into the jars, leaving [q:1/2] inch headspace at the top. Use a chopstick to remove air bubbles around the inside of each jar. Use a damp paper towel to wipe the rims of the jars, then put a flat lid and ring on each jar, adjusting the ring so that it’s just finger-tight. Return the jars to the water in the canning pot, making sure the water covers the jars by at least 1 inch. Bring to a boil, and boil for 15 minutes to process.
  6. Remove the jars to a folded towel and do not disturb for 12 hours. After 1 hour, check that the lids have sealed by pressing down on the center of each; if it can be pushed down, it hasn’t sealed, and the jar should be refrigerated immediately. Label the sealed jars and store.