Pour the vinegar into a blender and blend on low. As the blender runs, slowly add olive oil in a steady stream. Process until the ingredients are thoroughly blended.
Add egg and Herbes de Provence. Pulse until well blended. Season with salt and pepper to taste.
Store in a glass jar.
Recipe by Natural Living Family with Dr. Z & Mama Z at https://naturallivingfamily.com/the-fine-art-of-homemade-vinaigrettes/