The Impossible Breakfast

Holmes and I were treating ourselves to a cooked breakfast at our favourite local eatery. As I was tucking into my Eggs Benedict, I noticed the waiter bring someone a dish that looked for all the world like chocolate ice cream.

“Really,” I declaimed. “The things people have for breakfast! Some people will eat anything.”

“Turns the stomach, does it not?” rejoined Holmes. “But of course, Watson, there are two things no one can ever eat for breakfast, no matter how strong their stomach.”

What two things did he speak of?

SOLUTION