Not so pure, see [1] and [2] about glyphosate contamination of some brands.

Not really a well researched article, the research linked below is well known in Europe and was discussed in every major news outlet six months ago.

Edit: If you disagree, reply, don't just downvote.

[1] http://www.reuters.com/article/us-germany-beer-idUSKCN0VY222

[2] http://sustainablepulse.com/2016/02/25/german-beer-industry-...