I have a 5 gallon carboy that was used as a secondary and would like to brew up a 4 gallon batch tonight or tomorrow night and ferment in this container. Does this leave enough room at the top where an airlock will suffice? Or should I consider a blow off tube?
My main question is how to customize or create a recipe to use for 4 gallons total. I have been purchasing the 5 gallon kits from the LHBS. I would like to do an American Pale Ale or even take it to an IPA. I am open to suggestions from anyone who happens upon this thread today!
I plan on doing a full boil (start with about 4.75 to 5 gallons) and would like to steep some grains for flavor and can use either LME or DME to add fermentables. My problem is I don't know what ingredients to get!