If this was the first episode of Steins;Gate you ever watched, let’s just say it’s highly unlikely you’d never, ever watch another.
But perhaps that’s unfair: this is an extra episode; it’s only meant to be a fun character supplement between two more vital episodes that aired. It isn’t meant to contribute much insight into anyone or anything, and in this it succeeds.
The plot, such as it is, is this: All the girls (plus Ruka) make chocolates, while Suzu worries about who Kagari’s valentine is. This leads to some funny scenes in her imagination involving Kagari with Tennouji or Rintarou.
Faris’ exasperation at no one knowing how to make chocolates (aside from Ruka and Yuki, who show up late) is amusing enough, especially when she almost fades into “pure white” from exhaustion.
But otherwise, to paraphrase both Kurisu and Amakurisu, it’s better to not watch and regret then to regret having watched. You’re better off watching the first show’s OVA instead.