GPP Soft Hackle (Gold-Partridge-Peacock)
Hook - Mustad Model 3906 / Size 6 (yes size six- I like this one big - the bigger hook and slender profile helps this fly fish deep along the bottom of the stream)
Thread - 6/0 UNI-Thread (Black)
Hackle - Hungarian Partridge (Natural)
Underbody - Narrow Mylar Tinsel (Silver)
Abdomen - Kreinik Soie Platte Silk (#2244) - Coated with superglue to make the silk indestructible.
Thorax - Five Strands of Peacock Herl (reinforced in thread dubbing loop)
Head - Tying thread coated with a thin coat of SHHAN clear nail polish
If you can get your hands on any old spools of Soie Platte's silk, the #2516 & #4525 & #4122, also make nice brown variations of this fly.
This is why I like this fly. It has such a nice nymph like appearance when the hackle collapses around the hook shank. Looks like a nice juicy bug (i.e. - trout MRE's).