01 -
Wash cherry tomatoes, cucumber, and red onion thoroughly under cold running water and pat completely dry. Halve cherry tomatoes, slice cucumber into 1/4-inch rounds, and cut red onion into thin half-moon slices.
02 -
Thoroughly wash and rinse a quart-sized glass jar and lid with hot water. Allow to air-dry or dry with a clean towel.
03 -
Carefully layer cherry tomatoes, cucumber slices, and red onion in the clean jar, alternating for an appealing color pattern. Tuck in smashed garlic and a sprig of dill, if using.
04 -
In a small saucepan, combine white vinegar, water, granulated sugar, kosher salt, mustard seeds, and black peppercorns. Bring to a boil over medium heat, stirring until sugar and salt dissolve completely.
05 -
Remove brine from heat and let cool for 2 to 3 minutes. Pour the warm brine slowly over the vegetables, ensuring they are fully submerged. Press vegetables down gently if needed to eliminate air bubbles.
06 -
Allow the filled jar to cool uncovered at room temperature for about 30 minutes, then seal tightly with the lid.
07 -
Refrigerate jar for at least 4 hours before serving. For optimal flavor development, marinate overnight. Consume within 2 weeks for best quality.