Add egg to your food processor and process for about 30 seconds.
Add in the lemon juice, ground mustard, and salt. And process for another 30 seconds.
With the food processor running, slowly drizzle in the oil until the mixture is emulsified and thick. Be sure to add it slowly so you g et a creamy mayo. Take at least two minutes of time to add and process.
Taste your mayo and add additional lemon juice, salt, or mustard for your desired taste.
The mayonnaise is now ready to be used. Enjoy!
Store in the refrigerator for up to 4 days.
* DO NOT USE extra virgin olive oil as it will make the flavor bitter and the taste will be too strong.
This makes about 1 ½ cups of Mayonnaise