Germany's Purity Law of 1516 states that German beer must contain only water, hops & this germinated grain
In 
Germany, it is at the moment not allowed to brew beer that contains... [DOC] [TLE] Beer Glossary | Sheehan Family Companies [PAR] This is generally only employed in Germany where the Reinheitsgebot ... used in 
beer production that are not adjuncts, malt, hops, water or yeast.