Here's a query to ponder over you afternoon/evening beer.
I made 21 L of wort on Sunday with an OG of 1.058 which I intended to bitter to 30 IBU but due to an error in my spreadsheet, was only bittered to 21 IBU. I have saved 2 L of wort from the day (filtered from the trub and hobs and vacuum sterilised in mason jars using a trusty old Namco pressure cooker), so potentially I could add extra hops to this saved wort, boil for a while and then add to the fermenting wort to achieve the desired 30 IBU. So the question is how do I calculate how much hops to add and how long to boil in these two litres of wort such that when added to the other 21 L I achieve the extra 9 IBUs?
Regards
Stephen. :unsure:
I made 21 L of wort on Sunday with an OG of 1.058 which I intended to bitter to 30 IBU but due to an error in my spreadsheet, was only bittered to 21 IBU. I have saved 2 L of wort from the day (filtered from the trub and hobs and vacuum sterilised in mason jars using a trusty old Namco pressure cooker), so potentially I could add extra hops to this saved wort, boil for a while and then add to the fermenting wort to achieve the desired 30 IBU. So the question is how do I calculate how much hops to add and how long to boil in these two litres of wort such that when added to the other 21 L I achieve the extra 9 IBUs?
Regards
Stephen. :unsure: