As ileeen said, the best way is to fish from feathermoon for sunscale salmon and nightfin and cook the two recipes you can buy there for them both will still be yellow at 300, if you don't fish you can also get a recipe at feathermoon for tender wolf steaks, and hunt the wolves right there on the island for the meat, these will be  green by the time you get to 300 and might take a bit more time to do.  If you really don't want to goto feathermoon you can do the clam chowder recipe from steamwheel outside gadgetzan, this is pretty fast since almost every turtle drops a clam shell witht he zesty clam meat, this will also be green by 300 but it will get you there.  I hope this helps, good luck. Taj