i wonderedunderground corridors , beneeth lumbruidge untili discovered a fihing spot,and i caught Some giant Frogspawn there!!! i was amazed by it, but it also had a "bait" optoion, i i wonder what unusual thing will i eb able to catch, and one more thing, are the frogspawn cookable?

To see if frogspawn is cookable, look in the cooking guide.

Well for fishing those bring a candle and a tinderbox(this is so important) and bring the right stuff for baiting and I dont think frogspawn is cookable

I think the bait fishing there is for cave eels, it would make sense but I've never actually tried it so I don't know for sure.

Frog spawn. No need to cook.