Pickled Asparagus

Bahan-bahan (10 porsi)

• 30 asparagus spears (trimmed)
• ⅓ cup coarse salt
• 2 quarts cold water
• 2 cups distilled white vinegar
• ⅔ cup granulated sugar
• 1 teaspoon coarse salt
• 1 teaspoon mustard seeds
• 2 teaspoons dried dill
• 1 white onion (sliced into rings)
• 2 heads garlic (separated into whole cloves and peeled (divided))
• ½ teaspoon red pepper flakes
• 2 sprigs fresh dill