1) Naming. This product has a name with an unusual derivation.
2) "Johnsons Fluid Beef".
3) "beef tea"
4) When you think it can't get worse: Chevril.
I still have a cup of stock every now and then - half a cube per mug, with a splash of lemon juice, salt and pepper to taste. Wakes and warms you up like anything.
edit: the "See Also" section of the page says that sewage transport boats in London were referred to as "Bovril boats". Yuck!
I can't even begin to comprehend what Bovril milk will taste like...and I'm not sure I want to know