This is an excerpt from Thomas Awkbarow's Recipes (MS Harley 5401)
(England, 15th century)
[based on a concordance]
The original source can be found at
Thomas Gloning's website
Muskyls Broth. Recipe muskyls & seth þam in water to þai go owte of þe shels; þan put a part of þe broth to whyte brede & þe remland put onto þe grondes; þan pike þi muskyls, þan put into þe broth mynesid onyons, & let it seth; þen put in þi muskyls to bole, and do þerto pepyr & saferon, & put þerto þi lyure etc.
Other versions of this recipe:
Muscules in broth (Two Fifteenth-Century Cookery-Books)
Musculles in brothe (A Noble Boke off Cookry)