hops question

[wiggy]

hi, im fairly new to homebrewing and am trying to learn a little more before i try my hand at more complicated recipies. when i see these two ingredients; 1.2 AAU hallertauer hop pellets(60 min.) (0.3 oz/8.5 g of 4% alpha acid) the next one is; 1 AAU hallertauer hop pellets(30 min.) (0.25 oz/7g of 4% alpha acid) i know that it is telling me how much and for how long but im not clear on exactly what i would get. how do these two differ and how do i order them. ive looked at hops charts and found hallertauer varieties but alpha acid is given in a range of % and its not clear to me what i would need. im looking for more of a general explanation to learn, rather than just where and what to get for this example.
any help would be much appreciated. thanks wiggy

 

[FSR402]

Welcome..

What I do because I get all my hop local I get the hops and then I adjust the recipe as needed.

In this

1 AAU hallertauer hop pellets(30 min.) (0.25 oz/7g of 4% alpha acid)

what they are saying is that you need 1% AAU for 30 minutes of boil. So if you had some hops that came in at 4% you would need 1/4 of an once to get the 1%
But if they can in at 2 % you would then have to change it to 1/2 oz to get the same AAU's.

Do I make it clear? I think I covered it but if not or you need more I'l be happy to hel somemore.

 

[FSR402]

also the longer you boil the hops the more bitterness you get from them and less flavor/aroma
So the 60 will be all bitter and no flavor/aroma and the 30 will be a little bit of bitterness and a lot of flavor and a little aroma.

 

[wiggy]

thank you, that is exactly what i was looking for.

 

[david_42]

You'll probably have to purchase an ounce of pellets and freeze the extra. Companies tend to prepackage hops.

 

[homebrewer_99]

Right...what FSR402 said.

Basically, the person who wrote the recipe down is giving you very detailed notes. They did a good job.