Dill Pickles

Name: Dill Pickles
Ingredients: 1 pound Persian or Kirby cucumbers, cut into 1/4-inch-thick coins; 1/2 white onion, sliced (about 2/3 cup); About 1 tablespoon kosher salt; 1 garlic clove, minced; 2 sprigs fresh dill, leaves picked and chopped, plus additional for garnish; 1 1/2 teaspoons whole black peppercorns; 1 1/2 teaspoons fennel seeds; 1 teaspoon red pepper flakes; 1 cup distilled white vinegar