In a bowl, whisk together the vinegar, brine or lemon juice, Dijon mustard, and salt until fully combined and the salt is dissolved.
Whisking vigorously, slowly pour the olive oil into the vinegar mixture. Stop pouring the oil if pools of oil appear on top of the vinegar mixture, and resume once they are incorporated. Continue whisking until all of the oil is fully incorporated and the dressing is slightly thickened. Taste and adjust seasoning.
Fold in the minced herbs and serve immediately, or store in an airtight jar in the refrigerator for up to 3 days.
Notes
If using dried herbs, allow the dressing to sit for 5-10 minutes to allow them to rehydrate a bit. If your vinaigrette begins to separate before serving, either whisk it together again or add it to an airtight container and shake for 20-30 seconds.Dressing that has fresh herbs and/or garlic will last 3 days in the refrigerator. If granulated garlic and dried herbs are used, it will last for a week.