Oishinbo

Synopsis

Kurita and her friends take Yamaoka to Roppongi and they come across a very popular ice cream parlor. While waiting in the queue they see police Inspector Nakamatsu ejected for creating a disturbance. When Kurita and Yamaoka question him he confesses that he is in love with an ice cream saleswoman, Utako Mizumori, but her shop is doing poorly. They try her ice cream and find that, although she uses the best ingredients, it tastes thick and heavy. Yamaoka devises a plan to improve her manufacturing technique, getting Nakamatsu to slice the Roppongi ice creams and hers with a samurai sword. Yamaoka shows that the Roppongi ice cream has more aeration, giving a more "melt-in-the-mouth" feeling. She changes her style accordingly and her shop becomes a success.

(Source: Wikipedia)