It's often said that the scientific truth can be more magical than magic itself, and Twilight Sparkle's wonderful dance with the various tools and seasonings, her balancing the special ingredient (friendship? ), it's great. More so is the wondrous visage of Twilight Sparkle herself, mane spreading (from the static electricity of all that simultaneous magic?), the intensity of her eyes, that little bit of her tongue sticking out in concentration – perhaps anticipation too. The glow only makes her more lovely too.
It's good that despite telekinesis she's still taking precautions with the cooking mitts, as it's easy to forget and grab a metal ladle or something without thinking as she concentrates on everything else. Very cute apron too.