Revisited Brussel Sprouts with Tarragon Cider Vinegar

Name: Revisited Brussel Sprouts with Tarragon Cider Vinegar
Ingredients: For the Brussel Sprouts:; 1/2 teaspoon yellow mustard seeds; 1/2 teaspoon caraway seeds; 1/2 pound brussel sprouts, stem end trimmed, cut in half if small, quarters if larger; 1/2 teaspoon sea salt, or more to taste; 4 slender green onions, white and light green part, thinly sliced; 1 small serrano pepper, finely minced; 1 fat clove of garlic, smashed; 1 tablespoon extra virgin olive oil; 3 tablespoons tarragon cider vinegar; 1 teaspoon agave nectar; Tarragon Vinegars; 1 bunch tarragon branches; 1, 2, or 3 cups vinegar of your choice, white, red or rice wine vinegar, or apple cider vinegar (preferably organic raw unfiltered)