I've made yeast starters based on white labs 2 pints water & 1/2cup dme method for 5 gallon batches multiple times with great results. Can I just double this to make a stater for a 10 gallon batch? 4 pints of water & 1 cup of dme with one vial of yeast? I looked at mr malty and it wasn't making a whole lot of sense to me.