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...
Something like that's never going 
to make food taste better.
.شيءٌ كهذا لن يجعل الطعام أكثر لذّة أبدًا
Das lässt doch das Essen
nie und nimmer besser schmecken.
Algo así no hará que tenga mejor sabor.
Algo así no hará que tenga mejor sabor.
Aucune chance
que ça change le goût du plat.
Una cosa del genere non renderà mai il cibo più buono.
Não tem como uma coisa dessas
deixar a comida mais gostosa.
Ничем таким ни за что 
не улучшить вкус еды.