Whisk the eggs yolks with 1 teaspoon water in a mixing bowl. Slowly whisk the canola oil into the eggs until an emulsion forms. Slowly add 1/2 cup lukewarm water and the lemon juice when the emulsion becomes too thick.
Make sure the sauce is creamy and fully emulsified before adding the truffle oil. Whisk in the truffle oil and add the salt and pepper. Add more water until the sauce turns off-white in color and has the consistency of ketchup. Taste for seasoning and acid, and add salt and lemon juice accordingly.
Serve on top of fresh, hot French fries tossed with a little salt and pepper, and sprinkle with grated Parmesan.
All the ingredients should be at room temperature to prevent the sauce from breaking. The sauce should be creamy and not too runny.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.
Consumption of raw or undercooked eggs, shellfish and meat may increase the risk of foodborne illness.
Recipe courtesy of Michael Kornick, DMK Burger Bar