Get my books (including The Food Lab and my new book, The Wok) here: https://www.kenjilopezalt.com/ If you like my stuff, follow me over on Patreon, where you will find every new recipe video published ad-free along with fully written step-by-step instructions: https://www.patreon.com/kenjilopezalt This recipe is adapted from my book, The Food Lab, and can also be found in another version on Serious Eats. You can get signed and personalized copies of my book here: https://booklarder.com/products/the-food-lab-better-home-cooking-through-science1 The Serious Eats version of the recipe is here: https://www.seriouseats.com/ultra-fluffy-mashed-potatoes-recipe