The month it took to brew the beer about to be chugged is probably not one of these things.
"On the surface, (brewing beer is) a really simple process," said John Withey, brewmaster at Top of the Hill. "But in reality there are a lot of complicated things going into the process, into the beer."
Top of the Hill and Carolina Brewery, both on Franklin Street, are the only two microbreweries in the Chapel Hill area.
Withey came from England, where he studied biochemistry, to join the brewing team at Top of the Hill."Historically, there were brewmasters in every town in England, and the head brewer had the same status and salary as a doctor," he said. "Things are a little different now."
Though times have changed, good brewers are still in high demand, said Jon Connolly, brewmaster at Carolina Brewery.
"We go through the brewing process more than 100 times a year, and it's a very complicated process," Connolly said.
For each brew, the brewmaster must find the perfect flavor mix of malted barley and hops.
"For a dark beer, we use roasted malts, and for a beer with sweet flavor we use caramel malts and special hops," Connolly said. "This formula is what gives the beer its characteristic flavor."
And variety, he said, is the name of the game.