Yolks rhymes with:
yokes, blokes, chokes, coax, coke's, cokes, evokes, folkes, folks, folks', hoax, invokes, jokes, kokes, mokes, noakes, nokes, oak's, oakes, oaks, oaks', pokes, polk's, provokes, smokes, soaks, spokes, stokes, strokes, vokes, yokes
Yolks sounds like:
yale's, yellowish, yellows, yells, yolk