Yeast | Nerdologists https://nerdologists.com Where to jump in on board games, anime, books, and movies as a Nerd Wed, 27 Jan 2016 04:40:22 +0000 en-US hourly 1 https://wordpress.org/?v=7.0.2 https://nerdologists.com/wp-content/uploads/2015/10/nerdologists-favicon.png Yeast | Nerdologists https://nerdologists.com 32 32 How To Homebrew https://nerdologists.com/2016/01/how-to-homebrew/ https://nerdologists.com/2016/01/how-to-homebrew/#respond Wed, 27 Jan 2016 04:40:22 +0000 http://nerdologists.com/?p=548 So now that you’ve decided homebrewing is cool and you should nerd out over it, how do you get started? What do you need? A

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So now that you’ve decided homebrewing is cool and you should nerd out over it, how do you get started?

What do you need?

Image Source: Home Brewing Made Easy
Image Source: Home Brewing Made Easy

A brew pot –  6- to 8-gallon brewing pot.

A carboy – glass over plastic

Siphon

Extract Brew Kit

A Large Spoon

An Airlock

A Thermometer – Digital Kitchen Thermometer

Sanitizer

Brew Bucket

Bottles

Bottle Caps

Capper

The Process

First step in my process is to sanitize everything. It’s most important to sanitize the stuff that will come in contact with the beer after you’ve boiled it, so that means the carboy, airlock, thermometer, and spoon. The reason for this is that you don’t want to introduce any bacteria into the brew after the boil. Now, that doesn’t mean you need to wear surgical gloves and breathe through a mask after the boil — in fact, I’ve cooled off the beer during the winter by setting it outside, uncovered — but it’s better to sanitize and control what you can. While completing this step, if I have liquid yeast I activate it so that it is warm and active at the end of the brew, since the yeast should be kept in the fridge until it’s ready for use.

Next, you fill the brew pot with 3-5 gallons of water and start to heat it up. During this process, you’ll steep the grains. A kit will come with a bag to put the grains in, like a cheese cloth, and the grains themselves. Most brew shops will help you grind up the specialty grains, but if you are going to get a kit and not brew for a few days, you shouldn’t grind the grains. Just before steeping the grains, you can prepare them by crushing them with a rolling pin, or grinding them in a grain grinder. While steeping the grains (generally 20-30 minutes), you’ll need to keep the temperature of the water between 120 and 155 degrees. Any lower and you won’t pull out the sugars and flavor form the grain; any higher and you’ll start to get a bitter flavor from it.

Image Source: Better Beer Blog
Image Source: Better Beer Blog

Once the grains are steeped, bring the water to a boil. Once it boils, add in the malts. Recipes will often recommend that you take the brew pot off the heat at this point, because you can burn the sugars on the bottom if you aren’t stirring constantly. If you have someone helping you, one of you can pour while the other stirs; otherwise, just turning down the heat works nicely, as this will keep it from burning as quickly. After the malts are added, return it to a boil. At this point, the boil goes on for an hour. During that hour, you’ll be adding in hops at different points — the recipe will tell you when. Remember that the early hops are added for the nose, and hops added later will make more of a difference with flavor.

Taking the wort (the product you’re left with after the boil) off the stove, you’ll then need to cool it down. There are wort chillers you can use, which basically run water through copper tubing to cool the beer faster. I’ve also put it in a bathtub that was filled with cold water. Or you can come up with some other way to cool it off, like setting it outside in the dead of winter. Once it has dropped to 80 degrees, which can take a while, you can move it to the carboy.

This is where the siphon comes in — you’ll now siphon the beer from the brew pot into the carboy. Alternatively, you can use a funnel instead of a siphon, but you’ll get more of the residue into your fermentation that way, and you’ll need a siphon later anyway. At this point, you’ll probably find that you have less than five gallons of water, so you’ll need to add some — taking water from the sink, or using filtered water, fill the carboy until there are 5 gallons. Next, add the yeast to the carboy, then put the plug from the airlock on and cover up the opening. Then, shake the beer up for one to two minutes to circulate the air into the beer. This will help the yeast work faster and keep less of it from dying.

Image Source: Wikipedia
Image Source: Wikipedia

To finish up on day one, fill the airlock with a little bit of water so the bottom of it is covered and air can’t pass through it. Next, put it on top and move the beer to a dark room. If you don’t have a dark room, you can cover the carboy with a towel, which is what I typically do. If things have gone correctly, within a few hours (or by the next day at the latest), you’ll start to hear air bubbles escaping through the airlock. This means that the yeast is doing its work. You then let the beer sit for two weeks, checking in on it once and a while. After a few days, you’ll notice that the bubbles are infrequent or may have completely stopped. This is normal, but continue to let it sit for the full two weeks so the flavors marry.

After that time, if you are going to keg the beer, move the beer to the sanitized keg with the siphon, so that any sludge that has settled on the bottom of the carboy is left behind. Closing the keg, put it under pressure and in a refrigerator or kegerator immediately. Cooling off the beer to the temp of a fridge or kegerator will stop the yeast from eating away any more sugars or doing anything else that might make your beer taste funky. The beer is put under 30 PSI of pressure for 24-48 hours to get it carbonated, and then find your serving pressure between 4-8 PSI.

Image Source: Serious Eats
Image Source: Serious Eats

If you are bottling, you’ll use the priming sugar from the kits, turning it into a simple syrup. Add this to a beer when you move to to the brew bucket. Use the spigot to fill the sanitized bottles. Taking the caps and the capper, put a bottle cap on each bottle. Once all the bottles are filled, the beers need to sit out for two more weeks out of sunlight.The yeast will eat the newly added sugars, but since there is nowhere for the air to escape, the beers will carbonate. After two weeks the beers are ready to enjoy.

And that’s how one brews from an extract kit. Next week, we’ll talk about how all-grain brewing differs and what you’ll need for that process.

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Drink, Drank, Drunk…The Basics of Beer https://nerdologists.com/2016/01/drink-drank-drunk/ https://nerdologists.com/2016/01/drink-drank-drunk/#respond Wed, 06 Jan 2016 01:40:05 +0000 http://nerdologists.com/?p=415 As you’ve probably been able to tell by our podcast being titled Dungeons and Flagons (which you should check out if you aren’t listening to

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As you’ve probably been able to tell by our podcast being titled Dungeons and Flagons (which you should check out if you aren’t listening to it already), we sometimes enjoy a drink or two or four. It is one area that I particularly enjoy being nerdy about. The different flavor profiles of beers, wines, and liquors makes an amazing combination of ingredients to experiment with. I’ve only recently begun to learn more about wine and different liquors and how the different blends of alcohol can be turned into amazing drinks.

But my real first passion is with beer. I love hoppy beers, light saisons, dark porters and stouts, and basically everything in between. The variety is something that has really increased my interest, as well as taking up the hobby of brewing beer. What flavor can I get from different combinations of grains? How can I make the beer stronger? What types of hops will give the beer a different profile than before?

So I’m going to start with some basic stuff about beer.

Image Credit: Davis Beer Week
Image Credit: Davis Beer Week

There are two overarching classifications of beers: Ale and Lager. The difference between these two types of beers is the yeast.

So let’s back up a little bit further and talk about yeast. We know it from making bread or pizza dough — to name a few. It’s what allows the dough to rise and poof up. Why does it do that? Yeast eats sugar, turning it into two separate parts: alcohol and carbon dioxide. When you bake bread, the yeast eats the sugars in the bread and causes it to puff up, but when you brew a batch of beer and the yeast eats the sugars in the mixture, the carbon dioxide is expelled, leaving the alcohol behind.

So, to create ales and lagers, different types of yeast are used. An ale yeast will eat the sugars at a higher temperature and will ferment the beer faster. Lager yeast is a colder-temperature yeast, which means it takes longer to get the same amount of fermentation. The most common beers in the world, Budweiser, Coors, and Miller, are all lagers.

But what about the other differences in beers? Some are hoppy, some are stronger, some are bitter, and some are vastly different colors. What causes those differences?

Image Credit: Leeners
Image Credit: Leeners

Hops: Hops are one of the other ingredients that can make beers very different from each other. Hops, depending on when you add them while brewing, will influence the flavor in different ways, and different types of hops will make a difference in the flavor as well. Some hops can be very earthy in flavor, while other hops have a citrus flavor, and depending on which ones you use and when, it will influence the beer’s flavor. The earlier you add hops in the brewing process, the hoppier a beer will smell. But the longer you wait until the end, the hoppier the beer will taste. Think about cooking — the earlier you add an ingredient, the more everything else in the dish will take on its flavor; this will also cause it to blend into the overall flavor more than it would if you put it in at the end. The same holds true for beer.

Hops also can influence the IBU (International Bitterness Units) of a beer. The higher the number, the more bitter a beer will be. There is a misconception, though, that any beer with hops is going to be a bitter beer. The Apollo hop has an Alpha Acid (read: bitterness) of 19%, where as Saaz hops have a mere 4%, so depending on which ones you use, it can really influence how bitter the beer is.

Color: A beer changes color depending on the malts that are used in it. A toasted malt grain is going to give the beer a darker color, as will different types of grain. If you were to make a rye beer, it will end up having a very red color. If you use primarily wheat, the beer will have a much lighter color. Most beers will have primarily barley as the base to get most of the malts, but depending on what you add to that, you influence the color and the flavor of the beer. The malt itself you can get one of two ways — you can purchase malt that has already been extracted, or you can soak your own grains in hot water until the sugars have been leached from them.

Strength: And why are some beers 3.2% alcohol, and others 12%? This comes down to two things that we have talked about above: the grains and the yeast. The more grains you use, the more sugar you’ll get out. The more sugar you get out, the more there is for the yeast to eat; the more the yeast eats, the more alcohol is converted. So the stronger beers will often have a maltier flavor to them, no matter the color of the beer. If you want to keep the maltier flavor down, you can also add sugar directly into the beer, which I’ve done before with a Maple Stout, or you can use rock sugar.

So that is just a little bit on the basics of beer and what makes different beers taste the way they do. With beer, it can be at times an acquired taste, but most people will have some type of beer that they like, if they can find the right one. So I  recommend going around and trying different beers. With the small brewery boom that is happening in the United States, there are many ways to get your hands on a lot of different types of beer to try.

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