Most software like beersmith has a scaling tool. But it really is easy to do...ingredient are scalable. For a 2.5 gallon batch use half the ingredients, for a 1 gallon batch use 1 5th the ingredients if it's a 5 gallon recipe.
It's really not difficult.
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Revvy's one of the cool reverends. He has a Harley and a t-shirt that says on the back "If you can read this, the bitch was Raptured. - Madman
I gotta tell ya, just between us girls, that Revvy is HOT. Very tall, gorgeous grey hair and a terrific smile. He's very good looking in person, with a charismatic personality... he drives like a ****ing maniac! - YooperBrew