01 -
Place the cucumbers and onions in a colander set over a large bowl or in the sink. Toss with the salt and let stand for 1-2 hours to extract water.
02 -
Thoroughly rinse the salt from the cucumbers and onions. Lay them flat on paper towel-lined sheet pans, cover with another layer of paper towels, and let dry overnight.
03 -
Combine vinegar, water, sugar, mustard seeds, celery seeds, and turmeric in a large saucepan. Bring to a boil, cook until sugar dissolves completely, then remove from heat.
04 -
Pack sterilized canning jars with the cucumbers and onions, leaving 1/2-inch space at the top. Pour the hot vinegar mixture over the cucumbers and onions, filling to just below the rim.
05 -
Seal jars according to manufacturer's instructions. To refrigerate, turn jars upside down for 15-20 minutes to allow the hot liquid to touch the lid, then flip upright and let cool before storing in the fridge. Allow flavors to develop for several days before serving.