rathskeller (n.)

1900, from German ratskeller, earlier rathskeller, "a cellar in a German town hall in which beer is sold," from rat "council" (from Proto-Germanic *redaz, from suffixed form of PIE root *re- "to reason, count") + keller "cellar" (see cellar (n.)). The German -h- inserted to avoid association with the word for "rat."