Next, take the remaining tablespoons of butter and again divide by four and equally space each piece over the fillet. Fold the foil up the sides of the fish lengthwise, making the width no more than 4 1/2 inches long. Bring the two sides together and create a fold 1/2 inch thick, and continue to fold over till the top of the foil is just above the fish. Take one side of the package and fold the side up, helping to create a container that will hold the ale. Fold and seal as just directed. On the remaining open side, pour ale into package and seal. The length should not be more than 8 1/2 inches long. Be careful not to tear the aluminum foil, or the package will leak. The package may be prepared 24 hours in advance, omitting the ale until ready to cook.