Step 11 - Fermentation
Leave your fermentation tank somewhere with a consistent temperature. UBREW has a room specially designed to hold out tanks at a consistent temperature.
Once pitched, a yeast orgy commences and it reproduces rapidly. As you'd imagine, it then gets super hungry, and sugar is its food of choice. Fermentation happens when yeast eats the sugars and kind of poops out alcohol and carbon dioxide gas. At this stage the CO2 will escape through the airlock*, and the wort becomes beer.
Most beers take around 10 days to ferment and settle, but lagers take a lot longer, around two months, and require much cooler conditions.
Step 12 - Bottling
Before you bottle, take another gravity reading. This is your final gravity. To work out your ABV you do a little bit of maths (original gravity - final gravity) x 131. Alternatively let BrewersFriend do it for you.
Before bottling, you need to add some extra sugar, which will re-ferment in the bottle and create CO2, which will dissolve into the beer and add the fizz.
There's various ways to bottle, ranging complex pressure systems to a simple lowly jug, and it can be messy! Seal your bottles tight with a crown cap and leave them somewhere cool to re-ferment and condition for at least 10 days. Read our how to bottle blog for more info.