Gather all your ingredients: a fully ripe peach, balsamic vinegar, honey, Dijon mustard, salt, pepper, and olive oil. Wash the peach, remove the pit, and chop into chunks for blending.

In your blender, combine the chopped peach, balsamic vinegar, honey, and Dijon mustard. Add a pinch of salt and pepper to taste. Blend on high for about 30 seconds until smooth.

With the blender on low speed, slowly drizzle in olive oil to emulsify. Blend for another 20-30 seconds until well combined.

Taste the vinaigrette and adjust sweetness with honey or tanginess with balsamic vinegar as needed, blending again briefly.

Transfer to an airtight container and store in the refrigerator for up to one week. Shake well before each use.