A pair of popular Japanese restaurants in downtown SF have permanently closed: 'Really sad'
A pair of popular Japanese restaurants in downtown SF have permanently closed: 'Really sad' FacebookTwitterEmail 1of3 Ramen Underground and Udon Underground, a pair of adjacent restaurants run by chef and owner Ken Matsumura, shuttered at the end of November.Ramen Underground/FacebookShow MoreShow Less 2of3 3of3 Prized for their popular noodle bowls and generous portions, a duo of side-by-side restaurants on Kearny Street have permanently closed their doors. Ramen Underground and Udon Underground – both opened by chef and owner Ken Matsumura in 2011 and 2018, respectively – shuttered at t...