This method needs a decent amount of requirements, so making a botfarm will take a while and some resources.
Decent video of what the method is. (There is a better method of getting karams, but I will let you figure that out)
Requirements for the video method: None, just money.
Requirements for other method: 67 Fishing, 67 cooking, decent combat level.
This is easily bottable, I have been botting it for a while now and I think the community deserves a money making method. (Plus, if it crashes I can make more scripts )
Secondary method(The good way)
Karambwan are fish which you can eat between hits, without losing an attack. Therefore they are very popular for pking and have a high price. This method can give up to 725k gp and 58k cooking experience an hour at level 67 cooking.
Requirements
To use this method you need to atleast have this quest completed:
Tai Bwo Wannai Trio (15 agility, 30 cooking, Jungle Potion and Druidic Ritual)Recommended
To use this method effectively I recommend to have the following stats
50+ Cooking - To burn less fish(All calculations are done at 66 cooking)
40 Construction & 40 Magic - Fastest banking
Family crest and cooking gauntlets - I assume these make you burn less food, haven't tested it though
Your house in brimhaven
Recommended items
To follow this guide you will need the following items:
Earth or air staff
Some gp
Law runes
Air or earth runes
Rings of dueling
Cooking gauntlets
Method
After completing Tai Bwo Wannai Trio Tiadeche has opened a store in which he sells raw Karambwan for 110-150 each. When cooked these fish sell for 2300-2500 each. He has a stock of 10 fish, but it regenerates extremely fast, in about the same time as it takes to change worlds. Therefore it is recommended to stay in one world and wait for them to regenerate. There is almost no market for raw karambwans, so you'll have to cook them, but some people mess up during Tai Bwo Wannai Trio and do need one to complete the quest. They are then often willing to pay a high price for it.
Steps
Buying the fish
Teleport to your house. Run south to Tiadeche:
Open the door and trade Tiadeche. Buy all karambwan wait for them to respawn and buy them again untill you have a full inventory. Teleport to castle wars, bank, and repeat.
Cooking
The best place to cook is at the Rogues Den in Burthope. Don't forget your cooking gauntlets.
Profits
You can get 460 fish an hour. At level 65 I burned 1/3 leaving me with 305 fish. They sell for either 2200 to 2500 each.
Alternative Method
If you manage to buy/get some trading sticks, you can use them to bank your fish. Right click the man north of the west house with the quest icon and select 'send parcel'. He'll charge you 10 trading sicks per fish. This method is faster for banking, but it also costs more. If you buy the trading sticks at 60-65 each you will get the same profit. If you buy for less you will get faster money, and if you buy for more it will cost you more. Currently trading sticks are sold for 70-100 gp and are therefore NOT worth it.
Notes
Higher population worlds do NOT make the fish respawn faster
World hopping is slightly faster, for me 52 seconds, but it also depends on your internet speed, so it might be faster for you. Letting the fish respawn takes 55 seconds.
Prices may change.
Profits and xp depend on your cooking level as you wil burn less at higher levels.
I didn't test if cooking gauntlets work or not for karambwans.
The burn rate was tested on 150 karambwans, and therefore might not be accurate
YES, that is a direct copy and paste. src = http://www.2007hq.com/forum/showthread.php?t=2735
Keep in mind that it is nowhere near the profit that he says. It has crashed drastically.