kind of Italian cottage cheese, 1877, earlier ricoct (1580s), from Italian ricotta, literally "recooked," from fem. past participle of Latin recoquere, from re- "again" (see re-) + coquere "to cook" (from PIE root *pekw- "to cook, ripen").
rickettsia
rickety
rickey
rickshaw
ricochet
ricotta
rid
riddance
ridden
riddle
ride