Scaling a recipe?

[RichBrewer]

If you keep missing your gravity and volume, do what I do:

- when you are done lautering, measure volume and gravity. Now you can determine the after boil volume based on the OG. You can also determine a conservative boil time in case you don't expect to boil off the difference in 90 or 60 min
- start boiling
- when 15 min are left, turn the flame off to stop the boiling and see where you are at with the volume. Now put your immersion chiller in and resume the boil
- claculate the amount that will be boiled off in the remaining 15 min and start boiling the amount of water you need to add to hit your calculated after-boil (cast-out) volume. Add that water as soon as it boils.
- now you should hit your gravity dead on, everytime.

Kai

I noticed ProMash in the water needed window calculates 4% reduction when the wort is cooled. Do we also need to do this when measuring pre-boil volume?

 

[Kaiser]

I noticed ProMash in the water needed window calculates 4% reduction when the wort is cooled. Do we also need to do this when measuring pre-boil volume?

That is a good question, and I have been asking this myself lately. But since pre and post boil volumes are measured at almost the same temp, there shouldn't be a need for this. To be exact, you would only need to scale the additional water needed based on temperature but those 4% won't change it much.

Kai

 

[Chairman Cheyco]

You could always have a separate scale on your kettle adjusted for boiling volume vs. cool volume...

 

[Baron von BeeGee]

You could always have a separate scale on your kettle adjusted for boiling volume vs. cool volume...

Are you trying to share a tangent with the Kaiser?

 

[Chairman Cheyco]

Maybe, but mine isn't tanned since it's still springtime and there haven't been too many sunny days...

 

[Baron von BeeGee]

What's it like up there? Unseasonably hot here...usually in the 80's lately. Finally got a decent batch of rain today (we're ~8" below normal, I believe). Between soccer on Sundays, yardwork, and a trip to the beach at Easter my gent is a bronze god!

 

[Chairman Cheyco]

Between soccer on Sundays, yardwork, and a trip to the beach at Easter my gent is a bronze god!

LOL

We had a couple nice days last week, in the mid 80s in your out-dated system, then it snowed on Saturday... So my gent is not really a bronze god, more like a ruddy barbarian.