We can find no record of worms ever forming a part of English diet, though we do have several receipts for versions of Snail Water which include earthworms, but there they are included as a supposed medicament for eye diseases or consumption.

There is this version of joke (a 'subtelty') worms made from cut lengths of bowel and hillariously sprinkled on "fysshe or flesshe" from the 15th Century...


Original Receipt in the verse cookery book 'Liber Cure Cocorum', 1430 (Liber Cure 1430);

Anoþer sotelté I wylle telle.
Take harpe strynges made of bowel,
In brede of stoe, þou cut hom þenne;
Kast hom on fysshe or flesshe, I kenne,
þat sothyn is hote or rostyd, iwys,
þat wynne seme wormes, so I have blys.