# What You'll Need:
→ Base
01 - 1 large egg, at room temperature
02 - 1 tablespoon Dijon mustard
03 - 1 tablespoon white wine vinegar or lemon juice
→ Oil
04 - 1 cup neutral oil (sunflower, canola, or light olive oil)
→ Seasoning
05 - 1/2 teaspoon fine sea salt
06 - 1/4 teaspoon freshly ground black pepper (optional)
# Directions:
01 - Add egg, Dijon mustard, vinegar or lemon juice, sea salt, and optional black pepper to a tall, narrow blending container.
02 - Carefully pour the neutral oil over the other ingredients.
03 - Insert the immersion blender to the bottom of the container.
04 - Activate the blender and keep it at the bottom for approximately 10 seconds, until the mixture thickens and turns creamy.
05 - Slowly move the immersion blender up and down to fully blend and emulsify the sauce. Continue until well incorporated and thick, about 30 seconds.
06 - Taste and adjust seasoning as desired.
07 - Transfer to a clean jar, secure the lid tightly, and refrigerate. Consume within one week.