Got it. According to Briess that made with the following grains:
INGREDIENTS
70% Base Malt
20% Rye Malt
10% Caramel Malt 40L
http://www.brewingwithbriess.com/Assets/PDFs/Briess_PISB_CBWRyeLME.pdf
According to their website, the base malt is pilsener. So I would personally make a...