Brew

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Old English brēowan (verb), of Germanic origin; related to Dutch brouwen and German brauen .

wiktionary

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Middle English brewen, from Old English brēowan, from Proto-West Germanic *breuwan, from Proto-Germanic *brewwaną, from Proto-Indo-European *bʰrewh₁-.

Cognate with Dutch brouwen, German brauen, Swedish brygga, Norwegian Bokmål brygge; also Ancient Greek φρέαρ(phréar, “well”), Latin fervēre(“to be hot; to burn; to boil”), Old Irish bruth(“violent, boiling heat”), Sanskrit भुर्वन्(bhurván, “motion of water”). It may be related to English barley

Middle English brewe(“eyebrow”), from Old English bru(“eyebrow”). Doublet of brow

etymonline

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brew (v.)

"produce (a beverage) by fermentation; prepare by mixing and boiling," Old English breowan (class II strong verb, past tense breaw, past participle browen), from Proto-Germanic *breuwan "to brew" (source also of Old Norse brugga, Old Frisian briuwa, Middle Dutch brouwen, Old High German briuwan, German brauen "to brew"), from PIE root *bhreu- "to boil, bubble, effervesce, burn;" the etymological sense thus being "make (a drink) by boiling." Intransitive, figurative sense of "be in preparation" (of trouble, etc.) is from c. 1300. Related: Brewed; brewing.

brew (n.)

"a brewed beverage, that which is brewed," c. 1500, from brew (v.).