Fish Feast

As of Patch 3.0.8 can be bought for 5 Dalaran Cooking Awards and learned at 450 cooking.
This is the best investment of Northern Spices for a raid, feeds 25 people.

As the name implies, Fish Feast, all the mats come from fishing:

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• 2 Musselback Sculpin
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• 2 Glacial Salmon
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• 2 Nettlefish
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• 1 Northern Spices
• 
  

Changes coming in patch 3.0.8:

Recipe: Shoveltusk Soup is disappearing.
Recipe: Succulent Orca Stew is disappearing.
Recipe: Fish Feast will be sold for 5 Dalaran Cooking Awards.
Recipe: Kungaloosh will be taught by a drunkard in the Dalaran Sewers.

The final tier of The Northrend Gourmet achievement is lowered to 44 from 45.

All 3 fish can also be caught from the open waters in Wintergrasp, so you can avoid hunting for pools.