I am new to brewing and i am going to do my first brew 1 gallon lager and 1 gallon beer red , I have a few questions that others could help me on , this is going to be a 1 gallon UK brew and i have powered yeast Lalbrew verdant , The recipe i have does not say how much to use, so is they a general amount of yeast i should use for 1 gallon for my beer and lager ? My other question is how much water should i include for the boil off?