Fermentation question

Homebrew Talk - Beer, Wine, Mead, & Cider Brewing Discussion Forum

Help Support Homebrew Talk - Beer, Wine, Mead, & Cider Brewing Discussion Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
S

skinnyterror

Member
Joined
Aug 17, 2012
Messages
20
Reaction score
0
Location
Oceanside
Hypothetical question here...

I've calculated my grain bill using a 68% efficiency and a gravity reading of 60gu's. Let say that my efficiency ends up being 75% and my new gu reading is around 67. So in order to get down to 60 gu's I need to add about 1/2 gallon of water. I plan on using a wyeast packet to ferment my beer and the packet states that there is enough yeast for a 5 gallon batch. Will this be enough yeast if I end up with more beer due to a higher efficiency?
 
skinnyterror said:
Hypothetical question here...

I've calculated my grain bill using a 68% efficiency and a gravity reading of 60gu's. Let say that my efficiency ends up being 75% and my new gu reading is around 67. So in order to get down to 60 gu's I need to add about 1/2 gallon of water. I plan on using a wyeast packet to ferment my beer and the packet states that there is enough yeast for a 5 gallon batch. Will this be enough yeast if I end up with more beer due to a higher efficiency?
Click to expand...

Yes your calculation is correct to add top off if your OG is higher than you want.

Yes you still should make a starter: Www.yeastcalc.com is another site, also allows for steps.
 
You can also use dry yeast if you don't feel like making a starter, but you don't have nearly as many options as you do with liquid.
 
skinnyterror said:
Hypothetical question here...

I've calculated my grain bill using a 68% efficiency and a gravity reading of 60gu's. Let say that my efficiency ends up being 75% and my new gu reading is around 67. So in order to get down to 60 gu's I need to add about 1/2 gallon of water. I plan on using a wyeast packet to ferment my beer and the packet states that there is enough yeast for a 5 gallon batch. Will this be enough yeast if I end up with more beer due to a higher efficiency?
Click to expand...

Why not just make a bigger beer with 5 gallons? The convention is to call the gravity reading Original Gravity (OG).

Gravity Units could be mistaken for the gravity points per pound per gallon (PPG). For instance, DME yields 45 PPG so you should get 45 gravity points for every pound of DME per gallon. 10 pounds of DME would be 450 points divided by 5 gallons = 1.090 OG

If you add up all your gravity points and have a desired OG, you can solve for post boil volume.
 
Thanks for the replies.

I do another terribly newbie-ish question... I looked at the calculators and understand the process of making the starter, but how long should I let the starter ferment before I add it to my wort? For example, if I'm brewing on a saturday, should I make my starter on a wed, thurs, fri? Also, once the starter is made do I pour in all the liquid into the wort that I have made, or do I want to drain liquid off of the top and just pour the trub in?
 
A day or two ought to be fine. I usually go about a day and a half. The wort won't really do anything for your fermentation. You can cold crash to let everything settle then pour off most of the liquid, leaving enough left to loosen up the compacted yeast. I then let it sit and come up to room temperature by the time it's ready to pitch.
 

Similar threads

G
First Custom Grain Bill- Thoughts?
Replies
11
Views
1K
BrewnWKopperKat
BrewnWKopperKat
T
Fermentation in corny keg
Replies
1
Views
349
VikeMan
VikeMan
_Keven
Question about a high gravity reading after 5 weeks
Replies
34
Views
1K
MikeCo
M
beervoid
Refractometer reading very different from Hydrometer, fermenting wort
Replies
20
Views
2K
jschein
jschein
N
End results with low mash efficiency
Replies
13
Views
784
doug293cz
doug293cz

Latest posts

Back
Top