As a new homebrewer, I just finished my first brew day! I had some doubts though about hop steeping I based my brew day from the book How to Brew by John Palmer. My first brew recipe is based on the Cincinnati Pale Ale from the book (Although I had to tweak it a bit as some components weren't locally available). Anyway, my question comes from the 3rd Hop addition which should steep for 15 minutes. It's mentioned that these hops are added after the 60 minute boil (I guess this is called knockout) and steep for 15 minutes before starting to chill the wort. I understand that this last hop addition is for for aroma and by steeping after the boil it shouldn't impact bitterness? I assumed that I needed to put the hops in a steeping sack and remove the sack after the 15 minute period? Is this really necessary, or could I have just dumped them in after the boil? Also, how can I specify this hop steeping in the brewersfriend recipe tool? I selected "aroma" but in the brew steps it indicated that I should add it 15 minutes before the end of the boil. Whereas I should add it after the boil. Are there any other accepted practices for adding hops for aroma other than hop steeping?