Beer 101: Lesson #2 - Malty Goodness
Sunday, October 18th, 2009It will come as no surprise to you that barley makes up by far the biggest proportion of beer’s ingredients (for the moment we will ignore wheat beers and other rare, non-barley beers). It is rather logical, then, to assume that malted barley also shapes the taste, aroma and quality of a beer more than any other ingredient.
This is true. Barley determines elements of colour, flavour, aroma, mouthfeel and even head retention. Therefore, to understand beer, one must first understand barley.
Barley is old, even serving as a staple of Ancient Egyptian diets. It is, fundamentally, a grass - more formally a cereal grain related to wheat, oats and bamboo. Its seeds, rich in simple starches and sugares, serve as the input for beer.
Most barley is relatively banal and used to feed cattle. However, a particular strain of barley is considered one of the most desirable grains, fetching lucrative prices for farmers. Dubbed “malting barley” it is the most respected of barleys. Such seeds tend to be plump and full of yeast-enticing starches and sugars.
What you need to know here is that in its natural state, barley is actually useless to brewers. To unlock its sweet sugars, it must go through a process of partial germination, called “malting”. In the process, barley is soaked in water for a few days. Natural processes behave as if the seed was ready to sprout, turning starches into sugars, and sugars into tiny shoots. If you stop the process at the right time, you will have a kernel that has few starches, many sugars, and only a tiny bit of sprout growth.
This is what talented maltsters do. They germinate for 4-6 days, then quickly dry the barley. From here, you can make beer. This is basic malted barley. But basic malt alone makes for a boring beer.
So malt producers have learned to do other things to this germinated grain. And here is where the world of malted barley gets dizzyingly complex. There are hundreds of barley products available to brewers, each offering a different characteristic to beer. So, let’s walk through some of the basic categories.
Base Malt. This is the un-altered malted barley. It will be the bulk of any recipe, offering sugar, a touch of graininess and little colour. Few beers are made exclusively with this type of malt, but almost every beer has some of it in it. Mt. Begbie High Country Kolsch show off base malt in an admirable fashion.
Specialty Malt. This is malt very similar to base malt, but is dried and then kilned at high temperatures to minimize moisture. This means a darker colour, plus a larger residual sweetness, from starches not being transformed into fermentable sugars. Brewers use this malt to create sweeter, maltier beers. Some good examples of beers accenting specialty malts are Samuel Adams Boston Lager and Ayinger Celebrator.
Caramelized Malt. This is a malt kilned while still moist. The stewing it undergoes results in caramelization of the sugars. It is added in small proportions, intended to add sweetness, body, and head retention to a beer. Almost every beer has some element of caramelized malt (sometimes called crystal malt). Any grainy or honey or caramel sweetness you detect in your beer will come from the crystal malt. The sweet in Fuller’s London Pride or the heft of Belhaven’s Wee Heavy show off caramelized malt quite well.
Roasted Malt. This is the coffee of barley. It is roasted at high temperatures which darkens and sharpens the barley. It is an intense malt, meant for delicate handling, added in very small proportions to add colour and roasty bitterness. It quickly adds colour and roast flavour to a beer. St. Ambroise Oatmeal Stout and Paddock Wood London Porter are classic examples of roasted malt’s effect.
Within each of these broad categories there are dozens of versions, varying due to regional origin of the grain, kiln temperatures, moisture content, kilning time, and other variables. Each offers its own quality to the beer.
How a brewer combines different barleys will fundamentally mould the final shape of their beer. And whether you experience from your beer a rich caramel maltiness, a delicate graininess or a robust espresso-note depends entirely on the malt use by that brewer.
This is what distinguishes beer from other, simpler beverages such as wine. There are literally thousands of combinations of barley forming vastly different flavours and aromas. And it is the brewer’s magic to combine them in such a fashion as to create something truly original.
And such is our privilege to consume such a versatile drink.


