OG and suggar

[Lit]

Hi! This is my sixth all-grain round, and this time I'm going to try my first Belgian Golden Strongh Ale attempt.
Since it's the first time I play with sugar and trying to follow a recipe, some questions raised.

OG in BGSA should be 1.070 – 1.095 range.
OG is mesured after boiling.
As I've been reading sugar should be added in the last 10 minutes or so after the boiling ends.

When a recipe counts for OG:1080 for example, it includes the suggar added and the water lost due to vapor. Is this all right?
This may sound obvious, but it isn't for me..

 

[JimRausch]

Yes. Typically the OG would be measured just before you add the yeast. In other words, after all fermentables have been added.

 

[frazier]

Hi! This is my sixth all-grain round, and this time I'm going to try my first Belgian Golden Strongh Ale attempt.
Since it's the first time I play with sugar and trying to follow a recipe, some questions raised.

Hello, welcome to HBT.

OG in BGSA should be 1.070 – 1.095 range.

OK, for the sake of discussion let's say you are aiming for 1.080 and a 5 gal batch.

OG is mesured after boiling.

Correct. Recipes sometimes give a pre-boil gravity, which is a fudgy number if you don't know what your boiloff is going to be. Let's say 1 gallon lost, so your pre-boil volume is 6 gallons.

As I've been reading sugar should be added in the last 10 minutes or so after the boiling ends.

When a recipe counts for OG:1080 for example, it includes the suggar added and the water lost due to vapor. Is this all right?
This may sound obvious, but it isn't for me..

Sugar will add 46 gravity points per pound. Divided over 5 gallons, that's 9 gravity points or .009 added to the gravity. So of your 80 gravity points (because your OG wants to be 1.080), 9 of them are from the sugar, meaning 71 come from the grains. Before you boil the wort down from 6 gallons to 5, your gravity will be 71*(5/6) = 59. So you will start with a gravity of 1.059 pre-boil (roughly); boil it down and add a pound of sugar, and end up at 1.080.

If you're lucky. But in any case, you will have beer.

Cheers!

 

[Lit]

This solves my doubts, thank to both of you!