Drain your soaked Cashews, if they are still in liquid. Add the Cashews, Lemon Juice, Vinegar, Nutritional Yeast, Dijon Mustard, and Salt to a high-speed blender. ( I use my Nutribullet 900 series)
Add ¼ cup of Water if you are using the Mayo immediately in a recipe
Add ⅓ cup of Water if you are planning on using the Mayo over time (ex: Sandwiches)
Blend all ingredients together for 60 seconds, then transfer to a glass jar or sealable container.
Store in the fridge for up to 10 days.