Originally Posted by bennie1986
Lets say I wanted to do an iipa with a OG of 1.080 and I used a starter with a stir plate, would that be enough? I guess I'm not sure how to calculate pitch rates with a starter.
I suggest you use Yeastcalc
to assist you in determining how much yeast you need to pitch depending on the volume of your brew and the OG.
You can estimate the volume of yeast you have in that jar by putting same amount of liquid in another like jar and then measuring it.
From the photo it looks like you have done a good job of washing the yeast and it is likely you will have around 3 bn cells per ml of compacted yeast.
So for example if you have 50ml of yeast then you could estimate you have around 50 x 3bn = 150bn cells. Now how many of those cells are viable depends on age since fermentation was completed. Yeastcalc will estimate how many viable cells you have and guide you in what size starter to make.