Quiche rhymes with:
ashish, bayerische, eash, friesz, heesch, judishe, leash, liesch, macleish, mcleish, mcneish, pastiche, rajneesh, sheesh, treesh, unleash
Quiche sounds like:
q, q's, q., q.'s, q.s, qawi, qi, qiao, qu, qua, quach, quack, quacks, quai, quake, quake's, quakes, quash, quasi, quassia, quay, quaye, que, queasy, queau, quechee, quek, ques, queue, queues, qui, quick, quickie, quigg, quik, quiz, quizzes, quo