Yeast starter help

[BrewRunning]

I’m going to be brewing my first 15 gallon batch soon and need some help on making my yeast starter. I’ll be using WY1318 and have 3 packs.

According to Mr. Malty, I would need to make around an 11L starter.

I’m wondering if I can just pitch the 3 packs into 11L of 1.040 wort or should I step up to it? If step up is recommended, what size should the steps be?

I do have a stir plate but, I’m not sure if it will work with the container I’ll have to use to get that size starter (most likely a growler).

Thanks for any help!

 

[day_trippr]

Mr Malty is particularly pessimistic.
Try this calculator https://www.brewersfriend.com/yeast-pitch-rate-and-starter-calculator/
You didn't mention the gravity of your proposed 15 gallon batch but if it's around 1.055 and your three 1318 packs are reasonably fresh you only need a 3 or 4 liter starter...

Cheers!

 

[BrewRunning]

Mr Malty is particularly pessimistic.
Try this calculator https://www.brewersfriend.com/yeast-pitch-rate-and-starter-calculator/
You didn't mention the gravity of your proposed 15 gallon batch but if it's around 1.055 and your three 1318 packs are reasonably fresh you only need a 3 or 4 liter starter...

Cheers!

Thanks, I’ll check that one out.

OG is 1.072

Thanks!

 

[day_trippr]

Ok, then our sponsor's calculator says you'd need 9 liters of 1.036 unstirred/unshaken starter (so, not so far from Mr Malty) or just 4 liters on a stir plate...

Cheers!

 

[BrewRunning]

So can I just pitch the 3 packs into 9L of 1.036 wort?

 

[day_trippr]

That would be one way to go, yes...

Cheers!

 

[Jtvann]

Agree with daytrippr ... that would be one way to go, but he politely left out that it would be a total waste of money and impractical way to go.

You have a stir plate.

You're about to spend more in this one batch on packages of yeast and yeast starter volume than would be the cost of one appropriately sized starter flask.

Use the calculator for yourself that was linked. You can very easily make this batch of beer with only 1 packet of yeast, stepping up the starters and not wasting 11 liters worth of DME.