英语词源字典 - 在线词源网站

fixings (n.)[fixings 词源字典]: "apparatus," 1820, American English, from fixing "act of putting in order" (c. 1600), verbal noun from fix (v.). American English sense of "food, garnishing" is attested from 1839.[fixings etymology, fixings origin, 英语词源]
garnish (v.): late 14c., "to decorate, adorn, beautify," also in Middle English "equip (a place) for defense; arm (oneself) for battle; prepare to defend," from Old French garniss-, present participle stem of garnir "provide, furnish; fortify, reinforce" (11c.), from Frankish *warnjan, from Proto-Germanic *warnon "be cautious, guard, provide for" (cognates: Old High German warnon "to take heed," Old English warnian "to take warning, beware;" see weir, and compare warn).

Sense evolution is from "arm oneself" to "fit out" to "embellish," which was the earliest meaning in English. Culinary sense of "to decorate a dish for the table" predominated after c. 1700. Older meaning survives in legal sense of "to warn or serve notice of attachment of funds" (1570s). Related: Garnished; garnishing.
garnishment (n.): 1550s, "embellishment, adornment, decoration," from garnish (v.) + -ment. Legal financial sense from 17c. The verbal noun garnishing also was used in the sense "ornament, that which decorates" (late 14c.).