Tip: click step to get into cook mode
Place yolks, lemon juice, salt, and hot sauce (plus any optional add-in ingredient you want) into the Vitamix container in the order listed and secure the lid.
Select the lowest setting. Start the machine, slowly increase to Variable 8, and run for 30 seconds.
While the machine is still running, remove the lid plug and slowly pour warm butter through the opening. As the mixture begins to thicken, the butter may be added at a faster rate. Finish pouring the butter and after blending for another 30 seconds, replace the lid plug.
Increase speed to Variable 10 and run for 3 to 5 seconds.