Couldn't decide what I was going to brew when in the home brew shop and ended up with roasted barley, chocolate malt and fuggles hops. With other ingredients I already have I've decided to either make a bitter. Wanting to use the choc malt and barley I was looking at the GH oatmeal stout....but don't have Challenger hops. Would I be mad to substitute Cascade instead? I also have fuggles and Goldings hops. I have MO and crystal malt. Any ideas welcome.