Could one boil the grains in, say, half a gallon of apple juice? or maybe a bit less, and use other juice for sparging? I ask because I live in a dorm room at university; as such, space and money are both in high demand, and so I only make 1 gallon batches of brew. In such a small batch, the amount of water that could be used for boiling and then added into the juice mixture is pretty minimal. If the juice wouldn't work for boiling, would it be better to use the recommended amounts of water for both steeping and sparging the grains, then heating that water up to boiling temp and letting some of the water boil off? I really want to get some Graff going in a couple days when I get a carboy freed up!