01 - In a small bowl, combine the Dijon mustard, vinegar, honey (if using), garlic, salt, and pepper.
02 - Whisk the mixture until completely smooth and well blended.
03 - Slowly drizzle in the olive oil while continuing to whisk, creating a slightly thick, emulsified dressing.
04 - Taste and adjust seasoning as desired, adding more salt, pepper, or vinegar to preference.
05 - Serve immediately or refrigerate in a sealed jar for up to 1 week.