I've recently updated my method for making my morning Ketogenic Hot Chocolate to no longer require electricity for heating the water and powering the mixer. Using a Toaks Rocket Stove I am able to heat the water using small sticks and twigs I find lying around, and I stir the drink using a stainless steel shake mixer.
With this setup I am able to fit everything in my backpack with enough to last 2 weeks in the wilderness.