Slice the cucumbers 1/4-inch thick by hand or on a mandoline into large mixing bowl. Toss the cucumbers with the pickling salt and cover with a thin layer of ice. Set aside for 4 hours.
Drain, rinse and drain the cucumbers again. Toss the drained cucumbers with the mustard seed and crushed red pepper. Transfer to a storage container, leaving enough room for the brine.
Make the brine by combining the vinegar, 4 cups water, the sugar and turmeric in a nonreactive saucepot. Brine to a boil and pour over the cucumbers. Let cool to room temperature before storing in a refrigerator for 3 weeks before using.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.