Trying to double a packet of S05

I know you don't need to make a starter for dry yeast if you're just pitching a 5 gallon batch- I never do (thank you Safale!) but I'm being cheap and I want to use 1 packet of yeast to ferment 10 gallons- how do I go about making the starter? I'm not sure about how big it needs to be for around 11 gallons of 1.054 OG wort.

At least for me SO5 is like $2/pack and unless you can wort for starters you're going to spend close to that on DME, not to mention your time.

usfmikeb said:

http://www.mrmalty.com/calc/calc.html

Click to expand...

That only works for liquid yeast starters, for dry it says how many packets you need... and $2 per pack? WTH... its $3.50-3.75 on the mail order sites I use.

Putting the numbers into mrmalty you are basically looking to take the cell count to 2 or 2.5 times what's in the pack. Do some googling on step up starters. There are formulas that take the innoculation rates and wort volume to get a doubling. If I recall it'll be around one pack of yeast in 2-4 liters. I still think a starter that size will use the same or more $ in dme as a second packet.

I guess I'm just lucky but all my local sources have really cheap dry yeast.

Make a 5 gal batch of beer 1st. There will than be more than enough yeast cake to harvest for a 10 gal batch.

badmajon said:

That only works for liquid yeast starters, for dry it says how many packets you need... and $2 per pack? WTH... its $3.50-3.75 on the mail order sites I use.

Click to expand...

As another poster said, you can easily use mrmalty to do a dry starter.