In an 8 – 12 quart pot or Dutch oven, preheated over medium heat and coat the bottom with the oil. Mix in the onions, fennel and bay leaves, lightly seasoning with salt and stir periodically for 10 – 12 minutes. Once the onions are transparent and starting to turn a light brown hue, add in the leeks, garlic, shallots, celery, carrots, parsnips, thyme and sage. Cook for another 6 – 8 minutes. Add in the flour and stir to evenly coat all the vegetables and cook the roux until it turns a light golden color, about 3 – 4 minutes, then add in the sour beer, followed by the stock, stirring in to make a gravy like sauce. Cook for 3 – 4 minutes, then add the cooked turkey (or chicken) meat and peas. Check and adjust the seasoning with salt and pepper. Turn off heat and remove the bay leaves from the pot. Either take a 9”x13” baking dish or 8 individual ramekins and lightly coat with olive oil, using a paper towel. Next add the filling and let cook while the crust is rolled out.