So I've been working on an ESB rescipe recently and I was kind of throwing around the idea of trying a parti gyle kinda like Fullers and London pride but I was contemplating adding additional grains for the second runnings. My thought was to have something like a mild for the 2nd batch by adding maybe a little bit of chocolate malt and perhaps some more crystal malt. Anyone have any experience with this or see any potential issues with this idea?