I have recently taken up homebrewing as a hobby. I make small batches of beer for personal enjoyment, not for sale. 
Oh interesting. What ingredients does homebrewing use?
It's brewed with water, grains, and hops. Hops is important to add flavor and also act as a preservative. 
Interesting! How long does it take typically to make one batch?
It can take weeks, depending on how the fermentation is progressing. It's pretty cool doing something that has been around since the 6th millennium BC. People have always liked to drink! 
Where do you store a batch that is fermenting? In a fridge? In a garage?
Beer
Beer is one of the oldest and most widely consumed alcoholic drinks in the world, and the third most popular drink overall after water and tea. Beer is brewed from cereal grains—most commonly from malted barley, though wheat, maize (corn), and rice are also used. During the brewing process, fermentation of the starch sugars in the wort produces ethanol and carbonation in the resulting beer. Most modern beer is brewed with hops, which add bitterness and other flavours and act as a natural preservative and
additional grains help add different character to the beer so that a single extract can be used to brew several varieties of beer. A full boil is required, with hop additions at different times depending on style.
Homebrewing kits Pre-hopped malt extract.
Sometimes known as beer in a can, no-boil, and hopped wort, these beer kits contain liquid malt extract that has already been boiled with hops to introduce bitterness and flavor. Pre-hopped kits simplify the brewing process by removing the need to add hops