Homebrewing Basics: Making a Yeast Starter

by: BEER-N-BBQ by Larry

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so the basic ingredients and equipment that you need for making a yeast starter or right in front of me here and you I have across the east you're using the Y yeast liquid activator pack you also need a flask or or a container I'm using the flask 1000 milliliter flask you also need some malt extract powder I got three ounces here I'm going to use myself and then of course a stopper with a drilled hole in it for an airlock and here I have a plastic airlock and a glass airlock and also a little bit of foil which I'll show you there's an uh there's two ways of doing the airlocks and I'll try to show them both I go back and forth between the two I really don't have a favorite method but but but here's the basics and says it in this is all you need to get started along with some water of course now let's get started alright so these ye stacks have a have a little bubble pouch in here of nutrients that you can pop and crack and and that kind of feeds the yeast in here and it'll get a little pup and swell up so the first thing I got to do is look for this and feel around for this bubble it's in here and oh and you have to get in here and find it and pop it better I think think that was it so now I'll just give it a little shake and let it sit for a couple few hours and it will pop and swell up and just like a inflate a balloon and it'll come back all right let's get the the flask going in the the water here so what I have is my flask here I'm going to add I'm going to add the dry ingredients here is what I got here three ounces of the dry malt extract and dump it all in all right so that's about three ounces of that then I'm going to fill it up till about 750 milliliters 750 milliliters something like that all right turn on the turn on the stove stir around every now and then because that he's going to heat up a lot I have a glove here heat resistant glove let's get a swirl here we go I'm gonna let that heat up over there now and some take this is going to take a while at the fork start to boil so you got to stand nearby keep stirring it so it doesn't burn on the bottom and it all dissolves in there so this will take a at least a few minutes one more thing that I like to add before it gets hot is a little yeast nutrient I usually measure it out but I'm going to eyeball it this time about a teaspoon or so something like that and I want to scroll that into

all right it's been a few minutes you can see it's cleared out a little bit you get a little bit of foam getting on top it's starting to make a sound like it's starting to bubble in there somewhere so you have to want to keep an eye on this thing now so it doesn't boil over because these Erlenmeyer flasks will definitely boil over cuz of their shape real fast this volcano so yeah keep a close eye on them and just make sure it doesn't blow over it we'll wait till it starts to boil and then we'll go on to the next step okay regardless it's starting to boil over see it bubbling see that see how fast that happens blue that work right over the top right over the top with that I caught it just in time so I was really settled off the side for just a moment let it settle down let me turn out a burger little bit out to Ashley and once I get it to a steady boil I'm going to put a put the top on it to sanitize it as well but not until it gets past this initial boil over stage C but see how fast that was I mean I can really get the camera turned back on time to catch it that's how fast it happens so yeah keep an eye on these things see it's really really steam in there but it'll settle back down and you can put my pic on there again see and it'll start the bubble again but and you can adjust the flame so it's not so rapid I saw and turn it down just so it boiled barely see a little bit lower actually even alright so once I'm confident that it's not going to foam over so fast again which it's about to hear or I'll get just just let sit for a minute and then the calm back down again

now let's fix it not worthwhile to want to use these flasks but I must say that the fact that I'm heating the actual vessel and sanitizing the vessel with the work in it makes me feel more comfortable and that my yeast starter won't be tainted before I use it so I put up with this because of this reason alone there it goes so now it's going back under again so now I got the flame turned down it should resume to a mild boil if it doesn't I'll turn down the heat some more just like that turn down the heat even more there we go and now it's just going to get to a small rolling boil just hopefully like that and I think it's now under control okay so a couple close calls there just like I would warned you out so now what I want to do there's two things you can do with paying what kind of air lock you have if you have the if you only have the plastic air lock you can't really put this in here it'll melt right so you can't sanitize this with the steam from coming out of here so you have to do it something else later which I can which are going to walk you through but it but but to do that it be effectively for the time being you can actually just cover this in foil and put a little white tent over it like that you know if you want to help sanitize inside of the thing but what seems to work pretty well too is that if you get a glass air lock like this one you can use the rubber stopper and put it right on top of there and sanitize the flask just like the I'm sorry itself has the air lock just like you're sanitizing the flask with the steam and the heat and that makes me feel uncomfortable too so that's what I'm going to do for this for this video right now okay it's only a bit about another minute here so what I did here is I put my little glass airlock in the little stopper here and then I'm just going to put the stopper right up in there just like that and now what's going to happen now is that the steam is going to rise it here rise up through here rise up through the airlock above here like this see and that's going to then sanitize this whole airlock and leave a little bit of water in there ultimately and it will be completely sanitized all right so now that it's boiling again I am going to let this boil for 15 maybe 20 minutes to sanitize everything and follow the work down alright 10 minutes in and you can see this airlocks got some fluid in it her steam beverage steam and it's bubbled up in there so now it's got a little air lock from the evaporated steam in here so that's why I do it this way so the whole the whole closed system you're sort of is all sanitized time is up in over 15 minutes and it's hit plenty of time on here so I turn off the heat and you can see here it's still hot still bubbling they got the little airlock it's all sanitized in there now I need to let it cool off the room temperature so I can you know put off to the side and let it sit or I'm gonna hurry I can soak it in some ice water in the sink declawed off quicker but it's definitely your option okay back to the liquid yeast here you see the package did swell quite nicely over the past couple hours that sat here so what we gotta do now is wait for the starter work to finish cooling off and then we'll edit add this to that now that the starter ward is cooled off now we can add these to it what I have here is these packet and a pair of scissors to cut it with I'm going to sanitize my spray bottle both sides of that as well as all around the package where I plan to make the cut let that sit for a few minutes and you know what I'm also just for make sure it's all sanitizes around the outside lip of the flask where the stopper meets the flask I'll let that sit for a few minutes before I go ahead and open this thing up one final step before I add the yeast and while the sanitizers you know working I'm going to I have to aerate this because with this when you boil this thing it loses a lot of the oxygen in in the work that the yeast want to feed on so what I gotta do is aerate this container for several minutes a few minutes at least shake it all around get it nice and foamy to get oxygen back into the liquid because least the yeast really need that so let's take care of that first there we go all right it's time to inoculate the starter work so I'm going to take the top off of this thing off the flask carefully lower it maybe place out to the side try not to let it touch 20 services let's sanitize it anyway but just to be sure then I take the packet give it a little stir everything's all mixed together there take the pair of scissors and I'm going to go ahead and cut the corner off of there okay you can't see in there but no i strictly smell the yeast now and so i'll go ahead and pour the yeast in here we go all right I'm gonna put this back on a little spray you with my spray bottle sanitizer make sure everything is kosher shove this back on make sure there is raises up a little bit make sure that there is sufficient liquid in there not I wanted to just maybe use my spray my star sand and give it just a little bit more and then that's my girl lock and now I'm going to push this whole thing off to one side somewhere and let it bubble overnight and all day tomorrow until I'm ready to use it on my final beer one more piece of advice that I should mention I pour the yeast in I give it a swirl right just to mix it in however it's it's better for the yeast if you occasionally give it a swirl or be so often between now and the time you need to use it that helps to eat the yeast growth it helps the east grow a lot better they actually sell stir plates that you can put these on the edge you have a little bar inside it's turns and the turns and stirs it constantly I don't have one of those at least not yet so what I do is every hour so or whenever I get around to walking by this thing in the house I'll give it a swirl just to keep the yeast and suspension alright so the next morning it's been going on for many hours now I give it a swirl like I said stir the yeast it fell out of solution back into the solution and it's still bubbling so let's just go over the rest of the day while I make the beer and then I'll add it later to continue watching the next video in my own brewing basics series about all grain brewing click on the link provided thanks for watching

More from this creator:
Part of a Homebrewing Basics video series, this particular video covers how to make a yeast starter to add to your wort later. Wyeast Yeast: http://amzn.to/2ot9zg3

Dry Malt Extract: http://amzn.to/2ot5bha

Erlenmeyer Flask: http://amzn.to/2qbxblN

Other episodes in this series Playlist (https://www.youtube.com/playlist?list=PLJGQZwp3xofuwirWhdD2ks1Zf2cji0-rr

): Homebrewing Basics: Sanitation Homebrewing Basics: All-Grain Brewing Homebrewing Basics: Fermentation Homebrewing Basics: The Boil Homebrewing Basics: Kegging Buy BNB Clothing & Other Gear: http://beernbbqbylarry.com/bnb-gear/

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