After you arrived at Far Harbor the Town gets attacked by Angler's. Pick up their Meat and cook it (Poached Angler) at a Cooking Station (there is one at Far Harbor).
New Recipes (Agile Sludgepak, Durable Sludgepak, Resilient Sludge Cocktail and Strong Sludge Cocktail) can also be found inside the Recipe Roundup” magazine, located in the
National Parks Visitor’s Center