Wagyu anyone?

I was really surprised when restaurants in the UAE started to offer Wagyu and other Japanese beef variations on their menu plans.
Today, the National even covered this Japanese delicacy.
What I am wondering about, is how this meat can be labelled as "Halal" on the menus, because as you may or may not know, these animals are being fed Beer and Sake. There are now many farmers in Europe which have switched to breeding Japanese cattle because they can make more money with it.