Thanks to the local home brew shop closing down, I now have (among other things) five ESB Bitter packs. Now, being relatively new to the open-source brewing experience, I'm keen to brew the five kits, but alter the flavour as much as possible between brews to try and find out how much the flavour can change depending upon ingredients. The first brew will just have to be a kilo of dextrose as a control brew, but what of the other four? I suppose I can do one with liquid malt, one hopped, one malted and hopped, and so on.
Does anyone have any suggestions on what comparative mixes I should try to cover a broad spectrum of flavours across five brews?