Depends on the trip, but the past year or so the set I take most is my hobo fishing kit. It comes in at 80g, and includes:
5kg strength fishing line
small tin box for assorted hooks, weights
string for trap line
small plastic bag to store cleaned fish
I need to get a light weight pair of forceps or pliers. I have been using a mini-multi tool for the job, and it's redundant as I always carry a knife with me (and don't need to other tools while I am out backpacking). It weighs as much as my kit, which ain't too bad, but I know I could do better.
I mostly caught perch and brown trout, and usually cooked them over an open fire with grill sticks.