Today is a good day for Mei enthusiasts!
About Mei's "Chocolate Fettuccino":
In Japanese, Mei says she wants to try a チョコペペロンチーノ (chocolate peperoncino), likely intending to say "chocolate frappuccino" (since this is what Yuzu gets her on their date).
"Peperoncino" is just the Italian word for hot chili peppers, but in Japanese, it's the abbreviated name of a pasta dish called "spaghetti aglio e olio" (the full Japanese name is "aglio, olio e peperoncino"). Basically, I guess Mei thought it was some kind of chocolate pasta.
However, the word peperoncino doesn't have this strong association with pasta in English, so in order to make Mei's reaction on Page 9 make sense, I swapped it for a mashup of fettuccine and frappuccino.
Also, here's the "log flume ride" Mei is referring to on Page 12 (from the chapter released in August of last year lmao):
https://dynasty-scans.com/chapters/citrus_august_7th#15
I hope you all enjoyed the chapter!