Depending on how tightly packed your jar is, you may not need all the brine. Alternatively, if the brine doesn't completely cover the vegetables, add water to reach the top. You can enjoy the pickles after just a few hours of chilling, but a full 24 hours will yield a more flavorful result.
3/4 cup water
1/2 cup white wine vinegar
1/4 cup sugar
1 small garlic clove, peeled and smashed
1 Tbsp. kosher salt
1 tsp. coriander seeds
1/2 tsp. black peppercorns
1/2 tsp. yellow mustard seeds
1/4 tsp. red pepper flakes (optional)
Assorted vegetables and herbs such as carrots and thyme, asparagus and tarragon, or radishes and dill