Crack an egg and separate the egg whites from the yolk. Save the whites for later and add the 1 egg yolk to a large bowl.
Mince 1 garlic clove or grate it directly into the bowl.
Squeeze the juice of 1/4 lemon (about 1 tbsp of lemon juice) in the bowl.
Add 1/4 tsp Dijon mustard to the bowl.
Whisk together the ingredients until combined.
Start by slowly adding canola oil into the bowl one drop at a time as you whisk. Once the mixture starts to emulsify, you can add a slow yet steady stream of canola oil until all the 1/2 cup canola oil has been combined.
Add a pinch of salt to taste Taste your mayo to see if you want to add anything else like extra garlic or even hot sauce to make it a spicy mayo.