The traditional homebrew batch size is 5 gallons, usually in a 5g corny keg. This has been the standard for decades. However, there are many advantages (and disadvantages) to smaller batch brewing. Here, I mean smaller keg sizes like 1.5g, 2.5g or 3g kegs.
Most BIAB or electric systems allow for 2.5g batches or even less with a brew bag and a traditional stove pot. Additionally, some brewers elect to brew a 5g batch then split the batch into 2 fermenters, allowing for experimentation with different hops or yeasts.
Advantages and Disadvantages
Some advantages include
Less water needed
Recipes are cheaper
Kettle heats up quicker and cools quicker as well
You will likely brew more often, thus improving your skills (if you aren't drunk)
More likely to experiment with different hops or yeasts
Smaller kegs easily fit in regular college fridge
Some disadvantages include
Less Beer!
Harder to share with friends because the keg will kick sooner
Essentially the same amount of time and work for less yield
What are your thoughts? Is there a place for small batch brewing or should we just man up and go traditional?
Small batch works for me! I regularly ferment and serve in my old "picobrew" kegs - 1.25 gal batches. I also have a slightly larger keg for 2 gal batches. Works well for me as I usually just drink it myself so it keeps it fresh with new batches and styles every couple of weeks. As an added bonus I make dog treats with the spent grain so they have a constant fresh supply too! (will post on that separately)