At the Easter social meeting we discussed an idea for a club brewing challenge based on an idea from American homebrew clubs. The basic concept is an unusual ingredient challenge and this is how it will probably work.
Everyone who wants to be involved in the challenge buys an unusual ingredient to the 18th June meeting. These ingredients can be anything but need to be a) not a normal brewing ingredient, b) food safe, c) reasonable to brew with (ie. nothing that will kill yeast).
The ingredients are allocated to brewers randomly and everyone brews a beer using the ingredient they where given (there will be a mechanism to swap ingedients you are allergic to (or similar)). The special ingredient needs to be at least tastable in the final beer.
In September we hold a tasting session and vote for the beer that best showcases it's 'special ingredient'.