Ingredients
1 pound baby zucchini, halved or quartered lengthwise
Kosher salt
1/2 cup lightly packed dill sprigs
1 cup distilled white vinegar, plus more if needed
2 teaspoons mustard seeds
1 teaspoon cumin seeds
1/2 teaspoon celery seeds
3 cloves garlic, peeled and halved
1 jalapeño or serrano pepper, halved lengthwise
2 tablespoons sugar
Preparation
In a large bowl, toss zucchini with 2 tablespoons salt; let stand 20 minutes. Cover with ice and water, weighting down with a plate, if necessary, to keep zucchini fully submerged. Let stand 1 hour. Drain in a colander; rinse to remove excess salt. Pack zucchini and dill into a 4-cup-capacity or two 2-cup-capacity jars.
In a medium saucepan, combine vinegar; 2/3 cup water; mustard, cumin, and celery seeds; garlic; jalapeño; sugar; and 1 tablespoon salt. Bring to a boil over medium-high heat, stirring until sugar dissolves. Carefully pour into jar with zucchini and dill. Top with more vinegar, if necessary. (Liquid should fully submerge zucchini mixture and reach about 1/2 inch from top.) Let cool completely, then cover and refrigerate until ready to use, up to 1 month or try canning with our helpful instructions.
