FG too high?

[Boru]

So, I wanted to bottle my Imperial Stout today and checked the FG (after 3.5 weeks) and it's three points too high (should be 1.023, it's 1.026) then I checked my notes and noticed that my OG was also 3 points higher than I'd anticipated (apparently I'm more efficient than I thought )

So would it follow than that my FG would also be a few points higher and this is within the range of deviation? Or should I hold out for fear of bottle bombs?

 

[ayoungrad]

FG is an estimate.

Any more info?

i.e. OG, ingredients, yeast type and amount, fermentation temps

 

[Ralelen]

.003 is nothing to worry about. Could possibly be range of deviation; sample temp, consideration of the alcohol content of the beer. RDWHAHB.

 

[Boru]

The OG was 1.093 and the FG was 1.026, based on the software I was using the prediction was 1.023, but then again as I stated my predicted OG was only supposed to be 1.090

It was a partial mash recipe. I'd have go back and check but I'm fairly certain I only used 6 or 7 lbs of pale liquid extract.

Yeast was Wyeast 1450 (Denny's favorite

 

[ayoungrad]

Well. You've got an AA of about 70%. The expected AA for that strain is 74-76%.

Do you only have one gravity measurement?

How much yeast did you pitch? Starter?

Temps?

 

[ayoungrad]

You are also nearing (but below) the EtOH tolerance of that strain which is 10%.

 

[Boru]

I did create a starter for the batch given the high FG.

The starter (a buddy of mine with a stir plate made it) was made to be able to handle an OG of 1.095.

The temp range might have been a problem. I stored it in a cool closet so it's possible the temp dipped below 60 briefly (it was a cool week) but I know the rest of the first week the ambient room temp hung out in the high 60's low 70's. The second and third week's it's been consistently 69-72 F in that closet.

 

[Boru]

So the recipe was:

8lbs 2 Row Pale Malt
1 lb Roasted Barley
1/2 lb Crystal 80
1/2 lb Crystal 120
1/2 lb Munich Malt
1/2 lb Chocolate Malt
1/2 lb Carafa II
5 lbs Liquid Pale Malt Extract
2 lbs Liquid Munich Malt Extract

 

[ayoungrad]

Well, you have 7 pounds of extract and 1 pound of crystal. These can cause a slightly higher than expected FG. In the future if you still want 1 pound of crystal, use some corn sugar instead of some of the extract.

As for now, your temps are great. You may be at FG. But I would make sure by checking SGs 2-3 days apart. If the readings are stable, bottle away.