Paleo Whole30 Mayo

0 Place egg, vinegar, lemon juice, salt and pepper in a wide mouth mason jar or a blender. Blend until combined.
1 With the blender on or with the immersion blender in the jar running, slowly drizzle the oil in until it emulsifies.
2 Move the immersion blender up and down in the jar until think. This should take less than a minute.
3 Store in fridge up to two weeks. Makes 1 1/2 cups.