īhi
1. (loan) (noun) yeast.
...kotahi koata mōrahihi, e rua aunihi kirīmi tāta, e 3 aunihi tinitia, 1/2 pāuna īhi pai... (TJ 8/12/1898:7). / ...one quart of molasses, 2 ounces of cream of tartar, 3 ounces of ginger, half a pound of good yeast.
Ko tā te īhi, he huri i te huka hei waiwaihā, hei hauhā hoki (RP 2009:221). / Yeast converts sugar to alcohol and carbon dioxide (RP 2009:221).