Como dizer "Vaca-preta" em inglês

Good one Donay!

I didn't even know there was an expression like this in Brazil.

All the best.

Interestingly, the "Black Cow" drink exists in English, with a meaning similar to the Portuguese, although the ingredients differ:

"Region appears to dictate the name and contents of this cold, sweet drink. Known as a root beer float, a black cow, a brown cow, and a sassy cow, this all-American favorite is a snap to make. This recipe serves one."

See http://www.ehow.com/how_4094_make-black-cow.html

Now, how do you say "root beer" in Portuguese?

Regards

Henry,

Além da definição de 'Root beer',não conheço um equivalente em português ou um nome específico para esta bebida.

In Australia this kind of ice-cream drink its called Spider...please don't ask me why!!kkkk...but its true... =D