When using higher amounts of wheat in the grist, say over 30%,* the remainder being barley and/or other grains, the beer can be called a wheat beer. For certain beer styles, such as (Belgian) WitBier, 50% or more of (raw, unmalted) wheat would be considered appropriate. The remainder would be a barley base malt such as a Pale malt or even Pilsner malt.With a 50/50 ratio of wheat and barley will it be a wheat ale or barley ale? What do you call it?
* That minimum of 30% of wheat is not etched in stone, can be even lower, to be called a wheat beer. As long as wheat character can be identified, such as haziness, flavor, mouthfeel, it can be a called a wheat beer.