Ms. Koizumi Loves Ramen Noodles is comprised of two plots. The first is the standard and incredibly boring group of high school girl anime stereotypes going on adventures tangentially related to the main character, Koizumi, featuring one of my least favorite tropes of all time: a girl with a creepy obsession who can't take "no" for an answer and is one genre-shift away from going full yandere. This part of the series of abysmally boring and I often find myself getting distracted when it's the focus.
The reason I kept watching Ms. Koizumi Loves Ramen Noodles despite its dreary side characters is Koizumi herself and her adventures - Koizumi, like me, just wants to talk about ramen and be left alone by her fellow students. Each episode's other half features her going to various ramen joints, trying new recipes, and giving the audience tips for serving up the perfect bowl. Of course, as with any half-decent food anime, the art goes all-out to make sure even the most humble instant ramen looks inhumanly delicious. Many nights where I watched the show were spent trying out these new dishes for myself and realizing just how big the world of Japanese ramen really is. These segments of the show reminded me of the short series Wakako-zake and I found myself asking more and more as the series went on if maybe it should have been a short anime itself.
Ms. Koizumi Loves Ramen Noodles is thoroughly enjoyable when it focuses on being a food anime, and my guess from how bland and cliche every other aspect is that the series even having any other focus is thanks to some editor appealing to the lowest common denominator of otaku culture. Clearly, the heart of Ms. Koizumi Loves Ramen Noodles is in its food, and it shines so brightly in this that for food anime fans, its worth putting up with an otherwise lackluster presentation.