01 - In a small bowl, combine the Dijon mustard, vinegar, honey (if using), minced garlic, salt, and pepper.
02 - Whisk the mixture vigorously until smooth and well blended.
03 - Slowly drizzle in the olive oil in a thin stream while whisking continuously, creating a slightly thick, emulsified dressing.
04 - Taste the vinaigrette and adjust salt, pepper, or vinegar as desired to suit your preference.
05 - Serve immediately over salads or grilled vegetables, or transfer to a sealed jar and refrigerate for up to 1 week.