" By the way, there's one more benefit to freezing eggs... that I neglected to tell you earlier.
Y'see...
by freezing them, the robust flavor of the yolks gets even richer!"
"The flavor of the yolk... changes?!"
"When you freeze a chicken egg, its proteins condense into a jelly... which gives it a tender and creamy consistency when you cook it. The flavor of the yolk in particular becomes deep and rich! Basically, freezing the egg is the biggest reason this tempura rice bowl is as delicious as it is!
Plus, I made sure to pour on plenty of Yukihira Family Restaurant's special savory and salty house sauce! It's soy sauce and mirin added to bonito stock. I made sure this batch was extra rich! There's no way it wouldn't par perfectly with the rice and egg!
The thing is, luxury-brand eggs all tend to have strong flavors from the get-go. Using them would make the entire rice bowl taste heavy and cloying."
"Wait. Is that why...?!"
"Yep! Since the sauce I use is thick and heavy, and freezing eggs makes their flavor richer...
... a blander egg is the best choice!"
"Oh! He had a legitimate reason for using those cheap eggs!"
"That's Soma for you! "

― , 食戟のソーマ 20 [Shokugeki no Souma 20] (Food Wars: Shokugeki no Soma, #20)