Recommended bowl: Katsuobushi & seabura
This Ibaraki-located shop opened in 2014. Two years later, it was ranked one of the top 50 best shops in Japan according to the popular Japanese food site Tabelog. The soup is a light chicken and fish stock served with a shio tare. Each bowl is then topped with a generous shower of pork back fat (seabura) and katsuobushi (dried bonito flakes). It's a unique bowl, nicely balanced between umami and richness from the animal fat. Several branches now in Osaka, but this here is the flagship.