Hæfe
Bosworth & Toller Anglo-Saxon Old English Dictionary - hæfe
According to the Old English Dictionary:
es;
- hæfe
- m. Leaven; fermentum :-- Warniaþ fram herodes hæfe cavete a fermento herodis, Mk. Skt. 8, 15. [Cf. O. H. Ger. hefo; m. fæx : Ger. hafen yeast.]