Difficulty: Easy - for beginners
Zucchini Relish (yield 6 pints)
3 1/2 cups apple cider vinegar
1 cup water
1 cup sugar
2 tablespoons kosher salt
3 pounds zucchini, peeled, seeded and shredded
1 tablespoon yellow mustard seed
1 tablespoon brown mustard seed
1 tablespoon chili flakes
1/2 tablespoon celery seed
Bring the vinegar, water, sugar, and salt to a boil in a large nonreactive saucepan. Stir to dissolve the sugar and salt.
Add the zucchini, mustard seeds, chili flakes, and celery seed. Reduce the heat and simmer for 7 minutes.
Using a slotted spoon, divide the zucchini among the hot, sterilized jars and top with the remaining liquid, leaving 1/2 inch headspace.
Check for air bubbles, wipe the rims, and secure the lids. Boil jars in a boiling water bath for 10 minutes, adjusting for elevation.