Preparation

• Gather ingredients, including the large egg at room temperature, ground mustard, salt, lemon juice, and avocado oil.
• Place the large egg, ground mustard, salt, and lemon juice into a wide-mouthed jar.
• Pour the avocado oil gently on top.
• Insert the immersion blender at the bottom of the jar.
• Blend the mixture for ten to fifteen seconds until it begins to thicken.
• Slowly lift the blender while blending to incorporate the oil fully.
• Taste and adjust the seasoning as desired.
• If too thick, add a splash of water to achieve your preferred consistency.
• Transfer the mayonnaise to a clean jar.
• Label and store in the refrigerator for up to one week.