To prepare a turkey and Brussels bubble and squeak cakes red pepper sauce recipe, first you'll need to prepare the ingredients. First, you will need the turkey, Brussels sprouts, red bell pepper, thyme, garlic, and red wine vinegar. Then, mix all of these ingredients together until they are well combined. Next, add the flour, baking powder, salt and pepper to the mixture and mix it until it's evenly mixed. Finally, stir in the egg yolks.