Ranma ½ (1989)

Season 1: Episode 128

After 10 whole years of fermentation, it's finally time for Ukyo to try out the special okonomiyaki sauce she made as a child. Unfourtunaly it tastes so horrible that she collapses, and the Tendos take her in while she recovers. While she's there, Akane grows increasingly jealous, especially since Ranma is going out of his way to be nice to someone he claims he just sees as a childhood friend...