Gather the ingredients and set your oven’s grill to the highest temperature.
Pierce the habanero peppers with a knife and place them on a baking pan. Drizzle with 1 tablespoon of avocado oil and place the pan under the hot grill for 5-7 minutes until charred.
Remove the skin and mash them with a fork. Set aside.
Place the egg yolk, lemon juice, water, and Dijon mustard in a tall mixing bowl or blender.
Process with a stick blender or in your blender while adding the rest of the avocado oil in a stream, until emulsified.
Add the habanera peppers, mix well, and season with salt to taste.