Sometimes, what makes craft beer interesting and playful is its pursuit of “innovation” to differentiate from classic beers. The inspiration and change made in the brewing of many beer styles gives an immense diversity in beer flavors. From beer aged in oak barrels from the past, to a modern take in aging beer using cognac barrels and bourbon barrels, all kinds of ideas are constantly being developed. There are also flavored beers that incorporate local ingredients and spices to give them a unique local personality.