Questions tagged [reusing-yeast]

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33 votes
2 answers
1k views

How to clean yeast

I like reusing yeast to save money, and I like having my own "house" yeast. However sooner or later my yeast eventually dies and becomes unusable. I have a feeling that each time I repitch, I'm ...
PMV's user avatar
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25 votes
5 answers
3k views

Reusing yeast at home

Reusing yeast at home is something I'm incredibly interested in, but haven't found the time to learn enough about it just yet. What are the basic steps for harvesting, cultivating, or whatever other ...
hookedonwinter's user avatar
19 votes
5 answers
11k views

Using trub directly vs. yeast rinsing.

Sometimes referred to as "yeast washing," the process of yeast rinsing separates the yeast from the hops and break material in the trub. Most brewers who reuse yeast — and store it for long ...
Dustin Rasener's user avatar
18 votes
4 answers
6k views

Should I ferment a new batch directly on the yeast cake generated by the previous batch?

I'm going to re-use the yeast cake from a low-gravity batch to ferment a high-gravity batch. Can I just put the wort directly on it? Does it then need to be agitated? Is it worth the risk of ...
Rich Armstrong's user avatar
14 votes
11 answers
18k views

Can I dry my own yeast to make it relatively shelf stable? How?

Obviously, it can be done, as dry yeast works for fermenting beer. I go sometimes a month or two between batches, and carrying over one yeast culture across beers seems a bit of a pain. How is dried ...
Jeremy Holovacs's user avatar
11 votes
4 answers
22k views

How do I save yeast to be reused?

I'm fairly new to beer (6 batches), I was using gelatin to clear my primary, but it has been noted that I then loose the ability to reuse the yeast. I have been using American Ale II liquid yeast and ...
Quentin's user avatar
  • 1,045
11 votes
5 answers
2k views

Is it necessary to aerate wort when pitching onto an existing yeast cake?

To my knowledge, aeration provides oxygen so that the yeast can reproduce before fermentation. If you're pitching onto an existing yeast cake, there should theoretically be enough yeast already to ...
Jeff L's user avatar
  • 4,130
10 votes
4 answers
7k views

How many times can yeast be reused?

A good yeast sample can be retrieved, stored & reused regularly across brews. Is there a limit to the number of generations a sample can last? I've heard that after so many generations a strain ...
Mark McDonald's user avatar
9 votes
4 answers
2k views

Harvested Yeast - What are these layers and do I have too much?

I harvested yeast a few weeks back from my hefeweizen (Wyeast 3068) which I had open fermented. To harvest, I scrapped it right off the top, after ~36 hours of fermenting, with a sanitized spoon. I ...
hartski's user avatar
  • 1,062
7 votes
2 answers
4k views

Storing Yeast Slurry

If I take a yeast slurry from a batch of beer, wash it and store it in a sanitized container - how long can I leave this yeast slurry in the fridge before repitching? I'm thinking of leaving it in the ...
BrotherLogic's user avatar
7 votes
3 answers
2k views

Measuring yeast in a slurry

Please tell me if I'm being overly simplistic here. I was reading the book yeast by Chris White and Jamil Zainasheff. In the book, they talk about measuring how many cells are in a slurry by using a ...
daveb's user avatar
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6 votes
2 answers
2k views

Phosphoric Acid Wash for Yeast

I love recycling yeast, see it as a great way to save money, and if you find a good one, they are great to use over and over again. I was chatting with a guy in my homebrew club who is a distiller (...
Pietro's user avatar
  • 3,158
6 votes
3 answers
3k views

Can I reuse brewing yeast as a nutritional yeast?

I have a budding vegan in the house. Even after reusing yeast for brewing I send a lot of yeast to the compost bin. Has anyone out there used the yeast as a nutritional supplement? If so, could any ...
emsr's user avatar
  • 205
6 votes
1 answer
181 views

Will reused yeast change beer taste?

I noticed that some breweries and home brewers reuse yeast for next batch. But from what I read about yeast mutation and generations that every new cell generation is bit different and can affect ...
Bomberis123's user avatar
6 votes
2 answers
935 views

Making a starter when reusing yeast

I want to reuse the washed yeast from a previous batch of beer in my next batch. Should I make a starter for it? If so, how much of it? I looked at MrMalty, and it seems to me they tell me not to make ...
Flyhard's user avatar
  • 802
6 votes
2 answers
4k views

Can ale yeast be used weeks after it's opened (Safale S-04)?

Second-time brewer (to be). When I did my first kit brew, I didn't want to mess anything up, and the instructions I was following told me to avoid the yeast sachet taped to the top of the LME can and ...
makdad's user avatar
  • 289
6 votes
1 answer
4k views

Can marmite be made from brew yeast leftovers?

If you don't know what marmite is you can stop reading now. A friend of a friend reckons you can make marmite from the yeast leftovers of your brew. Does anyone know how to do this? Any one have a ...
Poshpaws's user avatar
  • 2,144
5 votes
3 answers
513 views

How long does it take for yeast to mutate into having other characteristics?

I have heard yeast can mutate when you re-use yeast, and when it goes through many yeast-generations. How long does it take for the yeast to mutate? Which factors have an impact on the ...
Rouse's user avatar
  • 271
5 votes
1 answer
145 views

Questions on keeping a yeast strain going over and over

I have a couple of yeast questions that I have not found the answer to yet. I recently washed my yeast from a batch of beer using something like this. I got 5 jars of yeast out of this, and I assume ...
Metropolis's user avatar
4 votes
4 answers
386 views

Repitching yeast on back to back brews, which one first?

I'm brewing two beers back to back so I can reuse some White Labs California Ale (WLP001). One is a basic APA 1.058 OG and the Other is a Scottish Export/80 1.051 OG. Is there any reason I should ...
Patrick Kafka's user avatar
4 votes
2 answers
645 views

Yeast harvesting

I have just read an article about harvesting yeast (http://www.homebrewtalk.com/entries/yeast-harvesting-novel-approach.html). The author talks about making a starter and taking a part of the starter ...
Flyhard's user avatar
  • 802
4 votes
2 answers
361 views

Temperature conditions for saving cropped yeast?

What is an ideal environment for saving yeast I have harvested from my fermentation vessels? The lowest survivable temperature? Highest? I recently found the top of my fridge to be too cold when I ...
tbeseda's user avatar
  • 1,917
4 votes
2 answers
280 views

Yeast Washing - danger in long seperation times?

I attempted my first yeast washing last night after bottling. I added 1 quart of boiled-then-cooled water to my carboy, swished the yeast cake into suspension, then filled 2 quart jars, each about 3/...
user2101's user avatar
  • 348
4 votes
2 answers
504 views

Harvesting commercial yeast

Which commercial beers (local and/or national) are bottle conditioned and still have viable yeast? Also, what do commercial brewers do that renders the yeast unusable (pasteurization, filtering, ...
Arlo427's user avatar
  • 445
3 votes
3 answers
339 views

Culture yeast from bottles

i have read that we can culture yeast from commercial bottle conditioned beers, So is it not the same that we can use a bottle of our own beer that has been made from a brew that used a White labs or ...
Custodian's user avatar
  • 149
3 votes
2 answers
206 views

Should yeast be washed or just stored in the beer?

The answer to this question suggests yeast shouldn't be washed, is that really the current consensus? what if I'm brewing a different style? Won't the trub affect taste? Lots of hop residue there. ...
Cleber Goncalves's user avatar
3 votes
2 answers
492 views

Which is better: old yeast from the primary fermentation or reused yeast from primary fermentation?

It's known that reuse yeast from early stages is better. But during the fermentation the reused yeast multiplies itself, producing newer cells. Said that, I'd like to know if it's better to use yeast ...
user avatar
3 votes
3 answers
130 views

Chunky yeast Safeale-05 safe to pitch?

I just brewed American Red Ale, great fermentation, no off flavors. 11.25 lbs. Malteurop 2-row 0.75 lbs. Briess Caramel 60L 0.5 lbs. Belgian Special B But yeast, when fermentation is finished, looks ...
Iacovlev 's user avatar
3 votes
2 answers
1k views

How high in ABV can a beer be before the yeast is too stressed to re-use?

I've recently taken advantage of White Labs switch to year-round availability of WLP090, as this rocket fuel of a yeast strain is very attenuative, very clean, fast, and floccuates beautifully. I ...
Scott's user avatar
  • 5,974
3 votes
2 answers
136 views

Reusing yeast yes/no and how much?

Just a quick question on reusing yeast. I am about to bottle a 40 pints of St-Peters cream stout this weekend I was going to save the yeast and use it again. I'm going to do a small 1 gallon batch of ...
John.C's user avatar
  • 71
3 votes
1 answer
64 views

Pitching stressed yeast cake (Wit)

I've recently made a wit and used Wyeast WLP 3944. I didn't have time to make a starter and only had one package of yeast. Beersmith estimated the package to be around 66% viable given the date on ...
user16487's user avatar
2 votes
2 answers
987 views

Can I wash yeast with tap water or starsan?

I'm wondering what the easiest way to wash yeast after a brew might be, with the aim to store it in the fridge. The usual recommended method I've seen is to boil the water used for washing with the ...
Tim's user avatar
  • 177
2 votes
2 answers
183 views

Why Reuse Yeast?

Sorry for seeming clueless, but I am clueless. I've only brewed about 15 batches, or less, of extract beers. Thus far, I've always bought prepackaged recipe "kits" similar to a Betty Croker cake mix. ...
Ugly Dude's user avatar
  • 357
2 votes
2 answers
1k views

Top Cropping Cell Counts

TLDR: I have no idea how much top-cropped yeast to pitch into a ~1.055 OG Octoberfest (5.5 gallons) I am planning on making an Octoberfest (late I know) on August 18th. Instead of making a boring ...
Pietro's user avatar
  • 3,158
2 votes
2 answers
640 views

What's the best method of storing yeast for 4 to 6 months in the refrigerator?

I've done a bit of research into different options of yeast storage and so far the least time consuming and most accessible methods seem to be: Making a slant from a yeast sample taken directly from ...
ScrapeHeap's user avatar
2 votes
1 answer
577 views

Yeast plate not showing single colonies

Why do my yeast plates end up looking like this? And not this? My yeast plate is composed of wort + agar.
fthinker's user avatar
  • 678
2 votes
2 answers
274 views

Is autolysis a problem when reusing yeast?

I've seen around here and in other sources that for homebrewers a secondary fermentation (concerning autolysis) isn't necessary, unless you're going to dry hoppy or something like that. My question is ...
user avatar
2 votes
2 answers
711 views

Saving leftover saved yeast

I saved the yeast cake off my last batch, and tomorrow I'll be brewing again. The cake filled a growler, and after a week in the fridge has settled to about 2/3 yeast, 1/3 beer. After siphoning off ...
CDspace's user avatar
  • 788
2 votes
1 answer
214 views

How does a beginner manage their yeast farm?

I'm about 6 batches into my AG brewing and my fridge is slowly getting filled with jars of yeast I've been harvesting, each labelled so I can tell which batch they came from. So far I've been ...
Doug's user avatar
  • 463
2 votes
1 answer
258 views

Can I wash/re-use all that yeast in the blowoff

Last night, I put my 1.130+ (it wasn't until midnight when I finished that I noticed that it was higher than my hydrometer and refractometer could go) wort in the carboy to ferment. I wake up this ...
Scott's user avatar
  • 5,974
2 votes
1 answer
199 views

Is it normal for WY2112 to stall?

I've made three batches with the same colony of WY2112, and each one of them has exhibited the same odd behavior. I pitch a good quantity of yeast into oxygenated wort at 65 degrees F. Within 24 hours ...
FishesCycle's user avatar
  • 9,028
2 votes
2 answers
2k views

US-05 Fermentation Temperatures / Top Cropping

Brewed a 1.060 OG IPA last night (extract), pitched a packet of US-05 reconstituted with 5 ounces of water. Pitched at 68 degrees, but I wanted a clean fermentation with minimal esters, so I have the ...
Pietro's user avatar
  • 3,158
2 votes
1 answer
83 views

Pink (or salmon) colored colonies on foam in starter flask

I noticed several small pink colonies on the foam of a second stage starter that I made from recovered yeast (originally Gigayeast: GY 054) that was mixed with 25% glycerin and frozen. They were not ...
42-'s user avatar
  • 257
2 votes
1 answer
108 views

How to reuse/wash brettanomyces yeast

I made some apple cider with WLP648 brettanomyces. I'd like to try this yeast in some other experiments. Can I reuse brett like any other yeast? Can I pitch the lees/dregs into a new batch or can I ...
Matt's user avatar
  • 131
2 votes
4 answers
331 views

Harvesting yeast

I just finished with my first brew and have collected the stuff left at the bottom of the primary in a well sanitized jar. 24 hours after in the refrigerator it has separated into two layers. One of ...
MikePainter's user avatar
1 vote
2 answers
309 views

Is pouring down on a lager yeast cake any different from pouring down on an ale yeast cake?

I've made pouring down on the yeast cake of a prior batch my standard way of making big beers. Now I'm moving into lagers and I want to know if there's any difference. Lagers have a much higher ...
Rich Armstrong's user avatar
1 vote
3 answers
2k views

is my cider infected or is this normal for safaleUS05

Made a batch of cider with granny smith apples 13%brix. Juiced my self. used half or maybe less of Kmeta than what is suggested on the packet July 3: saf-ale US05 yeast. Starter was 2L apple juice ...
Thomas's user avatar
  • 115
1 vote
3 answers
2k views

Saving and storing yeast straight from the packet

I'm currently brewing 1 gallon batches. Say I have a liquid yeast smack pack that's for a 5 gallon batch. What I'd like to do is use about 1/4 to 1/3 of the pack and store the rest for later brews. ...
kevlar1818's user avatar
1 vote
1 answer
47 views

Yeast washed, combine containers?

We washed yeast from our last beer and now it's sitting in multiple containers in the fridge. The mixture is mostly water with some yeast at the bottom. Is it acceptable practice to combine the yeast ...
Stagleton's user avatar
  • 189
1 vote
1 answer
751 views

How did I manage to make apple sherry?

I have loads of apples in the garden and every year I make experimental 1-gallon batches of cider and apple wine (cider plus extra sugar). This year I tried to make a cider that wasn't ultra-dry, by ...
Dave45's user avatar
  • 111