Yaffe rhymes with:
assaf, behalf, braff, calf, carafe, chaff, fraph, gaf, gaff, gaffe, giraffe, graf, graff, graph, haff, half, laff, laugh, naff, paff, pfaff, raf, raff, scaff, schaff, shaff, sielaff, skaff, staff, staph, taff, taffe, unitaf
Yaffe sounds like:
yabba, yap, yapp, yep, yip, yippee, yoffie, yopp, you've, yuba, yup, yuppie, yuppify