Note: This recipe has not been verified against a documented source, or disagrees with one. Treat the materials and steps as unconfirmed.
Classic Recipe
Hook standard wet/dry fly, 12-16
Thread brown (waxed) 8/0
Materials
Body Orange floss silk (full shank)
Rib Fine black silk (lightly waxed) (4-5 turns)
Hackle Woodcock or grouse feather (fibers just to hook length), or ginger cock (1)
Head Brown material (small)
How to tie it
Lay a brown waxed thread base along the shank.
Tie in the fine black ribbing silk at the rear, then wrap a slim orange floss body forward.
Counter-wind the black silk rib forward in 4-5 evenly spaced turns to suggest the barred body of the natural.
Select a woodcock or grouse feather whose fibers are just the length of the hook and wind it as a soft hackle two turns behind the eye (a ginger cock hackle is the alternate 'hackled' dressing).