First make the mayo base. 1 cup of LIGHT olive oil, 1 egg, 1/2 teaspoon mustard powder, 1/2 teaspoon salt, 1/2 tsp lemon juice. Add all your ingredients to a mason jar and use your immersion blender to mix together until thick and creamy. into a mason jar. If you do not have an immersion blender add all ingredients to a blender except for the olive oil. Turn the blender on medium speed and slowly add in the light olive oil until thick and creamy.