More weird food.

From: Notes of a Journey from Cornhill to Grand Cairo, by Way of Lisbon, Athens, Constantinople, and Jerusalem: Performed in the Steamers of the Peninsular and Oriental Company. Contributors: M. A. Titmarsh - author. Publisher: Wiley & Putnam. Place of Publication: New York. Publication Year: 1846

"It was agreed that a party of us should land for half an hour, and taste real Spanish chocolate on Spanish ground. We followed Lieutenant Bundy, but humbly in the providor's boat; that officer going on shore to purchase fresh eggs, milk for tea (in place of the slimy substitute of whipped yolk of egg, which we had been using for our morning and evening meal), and, if possible, oysters, for which it is said the rocks of Vigo are famous."

Now the English have a strong preference for tea with milk, but if I had no alternative I'd drink it black rather than with whipped egg yolk. Ew!

And they already knew of a way of preserving milk for voyages by sealing it in a container then heating it, because I've come across that 50 years earlier.