Techniques to add flavour and aroma to beer with hops I'm a hop lover, recently I found one of bests IIPA I ever tasted (I don't know if I can name beer / brand)

I've found at the bottom of the bottle, there are no yeast rests, but yes hop leafs. :) sweet!

One friend tell me this technike is called bottle dry-hopping, consisting in introducing a little bud of hop in each bottle.

I've heard about dry-hopping but before botteling the beer, also i know  Hop Spider, is a filter you fill with hop for the freezing step.

Three techniques are great and give nice results at the end, so:


Anyone knows about other techniques using hops to add flavour and aroma AFTER cooking the beer?
Some breweries use a hop "Torpedo", where the beer is forced through a chamber containing the desired aroma hops:

http://byo.com/hops/item/1899-torpedoes-away

You probably don't need one that big, though.