Como carne de vaca
It translates to “like cow meat”, and is used to denote that something is very common, or can be easily find somewhere. Is has the same meaning as ‘run of the mill’.
In Brazil cow meat is very common, as well as chicken and pig. So probably that explains the meaning and use of this expression.
- Nossa! Você já viu uma jaqueta com esse tecido?!
- Ah, isso é como carne de vaca lá na minha terra.