We must have passed over hundreds of recipes that specified egg white and/or yolk. Until this one, which decided us on donning the life jackets and taking the plunge. We had only a semi-secco Marsala and so substituted a Rutherglen Muscadelle. And without cocoa powder we applied the faintest of dustings of nutmeg. It's certainly luxuriously delicious but, as a dessert alternative, we will continue to favour the Haberdasher. We are pleased to report no fever or stomach cramps, as yet. Cheers.