To find proof as to whether he is "in love" or not, Yukimura pats Himuro on the head from point-blank range. Seeing this, Ibarada, an upperclassman in the Ikeda Lab, talks about the need for a control experiment. In other words, in order to prove that the racing of his heart is because of Himuro specifically and not just because he's facing a woman, Yukimura has to pat Kanade and Ibarada on the head too. Himuro, on the other hand, sets out to prove that food made with love tastes better and cooks, but...
All we need to do is follow 
this recipe, right?
كلّ ما علينا فعله هو اتّباع هذه الوصفة، صحيح؟
Wir müssen uns nur an
das Rezept halten, nicht wahr?
Solo hay que seguir la receta, ¿verdad?
Solo hay que seguir la receta, ¿verdad?
Il suffit de suivre la recette…
Ça devrait être facile.
Non dobbiamo fare altro che seguire la ricetta, giusto?
É só fazer conforme a receita, certo?
Нужно ведь просто делать всё по рецепту?