Looks more like a Science Experiment to me!
Just saw this on Stage48 [Yukirin thread] and the first last thing that popped into my mind was them preparing food. There was bomb-making, art class and science lab going through my head before even the truth came to mind.
The lucky bastards better have a Masters in the art of food when they get lucky enough to marry these two!
百合 Fever 
June 26, 2013 at 22:46
About Yuki, her “recipe” was interesting. They were doing onigiri, and she describes her choice of filling ingredients like this :
わたしは、具を全部ピンク系で統一★
鮭、イクラ、明太子、カニカマ、ポップコーン←
気まぐれ^_^
(All my ingredients were of the full pink kind
salmon, ikura, mentaiko, crab sticks, popcorn
Whim of the moment ^_^)
Except for the popcorn, it must be kind of nice ^_-