01 - In a small bowl, combine the Dijon mustard, vinegar, honey (if using), garlic, salt, and pepper.
02 - Whisk until the mixture is completely smooth and uniform.
03 - Slowly drizzle in the olive oil while whisking continuously to create a slightly thick, emulsified dressing.
04 - Taste the vinaigrette and adjust salt, pepper, or vinegar as desired.
05 - Serve immediately or refrigerate in a sealed jar for up to 1 week.