salsæ

Probably through the intermediate of a Romance language, from Vulgar Latin *salsa, noun use of the feminine of Latin salsus (“salted”), past participle of saliō (“I salt”), from sāl.

salsæ f

1. sauce
   • 13th century, Henrik Harpestræng, "Quomodo temperertur salsum dominorum et quam diu durat.", An Early Northern Cookery Book, 7.

     Thæt ær hærræ salsæ, oc ær goth et halft aar.

     This is a lordly sauce, and it is good for half a year.