novemberScottishAle

Initial Brix 20, transfer to secondary on 11/14 gravity at 12


Safale S-04 8

Yeast Pitch Rate:
Units:
Sugar Scale:
Wort Gravity (OG): (°P)
Wort Volume: (Gallons)
Target Pitch Rate:
(million cells / ml / degree plato)
Yeast Type:
Dry Yeast Amount: (grams)
Cell Density: (billion cells / gram) cell count estimates


Cells Available:
110 billion cells
Pitch Rate As-Is:
0.42M cells / mL / °P
Target Pitch Rate Cells:
325 billion cells
Difference:
-215 billion cells

Needs starter (see below), or more yeast.

Part 2: Make a starter if required, supports up to 3 step-ups.
Yeast Starter - Up To 3 Step-Ups:
Starting Yeast Count: (Billion Cells)
Enter the number of cells you are starting with, or click the 'grab from above' button if you set up your yeast in the previous section.
Starter - Step 1:
Starter Size (L) Gravity (°P) Growth Model and Aeration

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DME Required:
7.2 oz, 204.9 g
Growth Rate:
1.5
Inoculation Rate: 55.0M cells/mL
Ending Cell Count:
274 billion cells
Resulting Pitch Rate:
1.05M cells / mL / °P
Starter does not create enough yeast cells. Increase starter size, change aeration technique, or do another step.
Starter Size (L) Gravity (°P) Growth Model and Aeration

		<br />

DME Required:
7.2 oz, 204.9 g
Increase:
0.8
Inoculation Rate: 137.0M cells/mL
Ending Cell Count:
496 billion cells
Resulting Pitch Rate:
1.91M cells / mL / °P
Starter meets desired pitching rate!

Dry Yeast - billions of cells per gram:

No one agrees on the number of yeast cells per gram in dry yeast!<br />
This is made more confusing because each yeast strain has different size cells and clumping tendencies.<br />
We put in a reasonable default of 10 billion cells per gram of dry yeast.<br />
Kaiser located a study which reports the following data on dry yeast ranging from 8-18 billion cells per gram:<br />
Yeast 	B cells/g<br />
Safale K-97 	14<br />
Safale S-04 	8 this batch<br />
Safbrew T-58 	18<br />
Safbrew S-33 	16<br />
Saflager S-23 	10<br />
Saflager S-189 	9<br />
Adapted from: Van Den Berg, S., &amp; Van Landschoot, A. (2003). Practical use of dried yeasts in the brewing industry. CEREVISIA, 28(3), 25-30 (Table 1). <br />

Gravity at 100% Efficiency:
1.116 - max
Gravity at 75% Efficiency:
1.087
* Efficiency:
71.31%
Points / Pound / Gallon (ppg):
26.8