Ingredients

1 1/2 cups distilled white vinegar or apple-cider vinegar 

1 1/4 cups sugar 

1/2 teaspoon mustard seeds 

1/2 teaspoon whole black peppercorns 

1/4 teaspoon celery seeds 

1/4 teaspoon celery seeds 

Coarse salt 

16 ounces Kirby cucumbers, trimmed and cut into 1-inch rounds 

1/2 small white onion, cut into 1/4-inch wedges 

Preparation

Combine vinegar, sugar, spices, and 2 tablespoons salt in a saucepan. Bring to a boil, stirring until sugar is dissolved. Fill clean containers tightly with cucumbers and onion. Add boiling brine to cover completely. Let cool completely. Cover, label, and refrigerate at least 1 week before serving, or up to 3 months.