Super Soba

Super Soba is a mysterious formula of soba noodles that, once cooked, grants whoever ingests them an incredible increase in strength. As its name implies, it is the item around which the Super Soba Arc revolves, and likewise its anime equivalent, the episode Transform! Akane the Super-Duper Girl.

Encounter
Happosai acquired these magical buckwheat noodles from an unknown source, intending to consume them and use their power to better enforce his dominance over the Tendo Dojo. Unfortunately, he was distracted once the noodles had been cooked by the television advertising either a "swimsuit jamboree" (manga) or a bikini contest (anime), at the same time that Kasumi served up ordinary soba for everybody else. In the confusion, Akane Tendo mistook Happosai's bowl for her own and ate it instead.

Happosai then acquired a second bowl of Super Soba, but had the misfortune of cooking it in a place where Shampoo was able to spot him. Having recently challenged the newly empowered Akane to a match, Shampoo promptly beat Happosai up and stole this second batch for herself.

Effects
The consumer of Super Soba gains a massive increase in raw physical strength. Unfortunately, no precise details are provided as to how strong the soba-eater is made, although Akane and Shampoo demonstrate incredible feats of strength easily comparable to if not exceeding those of Ryoga Hibiki. It is also unclear if the Super Soba's power boost raises the user's strength to a single level, or if it is somehow additive to the user's base power level - that is, it's not explicitly said whether two people who both eat Super Soba will become equally strong, or if the stronger prior to eating will remain stronger after eating.

Side-Effects
Super Soba has one major and obvious drawback; the eater will eventually begin sprouting whiskers. In canon, Akane Tendo is shown sprouting a set of six cat or dog-like whiskers on her cheeks, but it's unknown if this is the end of the side-effect for women or if eventually these would have developed into a fully-fledged mustache and/or beard.

A non-explicit drawback is that, whilst the Super Soba grants increased strength, it doesn't grant the user any increased control over that new strength. As a result, the user may have recurring problems with exerting far more force than they intend. This is particularly problematic for Akane, whose hot temper means she tends to have poor strength control at the best of times.

Super Soba's power can be nullified by eating Super Soba Antidote.