I’m about 40 brews into home brewing and have a preferred recipe which i make 3 23l tubs at a time. I use us05 yeast which is expensive. Can you make a starter from one pack and feed it up to pitch across all three tubs or doesn’t it work that way?
Sure you can!
Cool. Thanks
You can do that, but it’s not recommended for dry yeast. It can potentially be detrimental. Go ahead and try if you like.
Where do you get your yeast? Maybe it’s time to shop around; I’ve seen widely different prices for the same yeast at different shops.
The easiest thing to do is save slurry from one batch to the next.
Pete is spot on. If you can brew a 5 gal batch or so, you can use one sachet for it and then harvest the whole cake for a large batch pitch (say 525 ml or so fresh harvested for your 3 x 23l batch) and still have some extra to store. Pitch rate depends on a lot of factors, including ABV and lager versus ale style beer.
+2. ^^^^^This
It is more of a situation where a brewer loses the advantage of not having to aerate wort. However, I agree with the pitch 23 liters of wort and crop yeast from that batch to pitch into larger batches. Alternatively, the OP can start a 23L batch and step it up to a larger batch size the following day. For 69L of wort, the minimum starter size should be no less than 3L (1L of starter per 23L tub). That is a step rate of 1 to 23, which will get the job done.
Yes, we have been doing this for decades.
Not only does the harvested yeast perform better, but it also will save you $10 to $20 per 10 gallon batch.
Gonna assume you’re not from the US, because the US-05 dry yeast it not so expensive, but in my country it is, the guys make all the point there is about it, reuse the slurry, becareful with a high over-pitching, and make a starter it a good option, there a few things you need to pay atention, more sanitization, better aeration, but you can do without problem