If you're after the cream of the crop, the crème de la crème of tonkotsu ramen, then take the trek down south to Tsukuihama. Located at the southern tip of Yokosuka, Kanagawa is a secret gem of a ramen shop, Shouta Ramen.
The Hinodecho side of Yokohama isn't exactly the first place one thinks of when they're craving some noodle slurps, but right across the street from the station, there seems to be a little ramen boom action going on.
A buckwheat and soysauce bowl of ramen? Hama Tora ramen is the tiger bowl of the concrete jungle better known as Yokohama. I think I've done died and gone to ramen heaven with this place, it's that good.