In a tall container, add one large egg, one tablespoon of Dijon mustard, one tablespoon of white vinegar, one tablespoon of fresh lemon juice, and a pinch of fine sea salt. Mix until well blended.

Pour in 1 cup of extra light olive oil over the mixture and allow it to settle for about 15 seconds.

Insert an immersion blender into the bottom of the jar, blend on high speed for about 10 seconds without moving the blender.

Gradually move the immersion blender upwards through the mixture, continuing blending for an additional 10-15 seconds until smooth and creamy.

Taste your Easy Homemade Mayonnaise and adjust as needed with more lemon juice, salt, or sugar. Blend again if adjustments are made.

Transfer the mayonnaise into an airtight container, seal tightly, and refrigerate immediately.