Complex sentence: In addition to its use for a brand of bourbon, the Bulleit brand name is also now used for a rye whiskey launched in March 2011 with a mash bill of 95% rye and 5% malted barley.
Split into simpler sentences: In addition to its use for a brand of bourbon, Bulleit is also used as the name of a rye whiskey, which was released in March 2011. The rye has a mash bill of 95% rye and 5% malted barley.