This rare lexeme is either the past participle form of the verb sorer (‘to become reddish brown’; not attested in Anglo-Norman, but see Gdf 7,481) or, perhaps less likely, a variant spelling of the adjective soret (DMF: ‘Qui tire sur le jaune brun, le brun roux, le fauve’). The English cognate forms allow for both possibilities (see MED’s etymology). Evidently, while the editor of Culinary Colls chose to have the accented form soré in (B) 27.3, the word may well be read as sore – a variant of sor¹.