For this loaf, I used a pale chocolate malt. The grains smelled a bit like chocolate with a hint of coffee. One of my previous loaves used a darker roasted malt called Pearl Black that smelled very much like roasted coffee and had a much stronger flavor in the finished loaf. If you don't have dark malted barley, you could simply leave it out and use this recipe to make a standard rye. It will be a lot paler, and not as complex, but still a nice loaf of rye.