Hop timing

[cowboy7307]

Iam converting a recipe from a 60 min boil to a 30 min boil

recipe asks for a 60 min of one hop and a 30 min of the other hop
after converting the 60 min amount of hops to the rate needed for the 30 min boil

Do i boil both hops for 30 min (I think i will )
Hope its not a stupid question

 

[Minbari]

Iam converting a recipe from a 60 min boil to a 30 min boil

recipe asks for a 60 min of one hop and a 30 min of the other hop
after converting the 60 min amount of hops to the rate needed for the 30 min boil

Do i boil both hops for 30 min (I think i will )
Hope its not a stupid question

You would change the boil time to 30 minutes, then change the amount of hops to get your ibu level back to that of the 60 min boil

 

[Craigerrr]

Curious why you are changing from 60 min to 30 minute boil?
If you have a 60 minute addition, you will need more of the same hop at 30 minutes to get the same bitterness contribution. This increased hop amount with a shorter exposure will also contribute more flavor. This will change the beer, which isn't a bad thing, but just so you are aware, you won't get the same result.
I typically only use a 30 minute boil in a beer that doesn't get any boil additions (NEIPA).

 

[Daniel Parshley]

I use a 30 minute boil frequently, particularly when adding hops at shutoff and letting it stand for another 30 minutes before starting cooling. The BF recipe application does a good job for me in predicting IBUs. The results are good and a bit less sharp bitterness is nice. Only downside has been a little more sweetness than anticipated. Magnum hops at 30 minutes fixed that fairly well.