Place the egg yolks, lemon juice and sugar into the bowl of a food processor. Pulse to combine, until it's foamy.
Slowly pour in the oil while the machine is running, for 10-15 seconds, until the mixture thickens.
Scrape the sides of the bowl with a spatula. Season with salt and pepper. Pulse for 2-3 more seconds. If it's thicker than you like, thin it out with a Tablespoon of hot water.
Refrigerate the mayonnaise in a sealed container.
Recipe by Olga's Flavor Factory at https://www.olgasflavorfactory.com/olgastips/kitchen-tips/homemade-mayonnaise/