I have a small out of home baking business. I have always developed my own recipes. However, I am wanting to introduce some items that I have found in cookbooks. The recipes I make aren't always identically, but are usually fairly similar. How does this work for a business? Does every bakery develop their own recipes? I don't disclose my recipes to my customers, only ingredients, so it seems strange to disclose the recipe and where it's from if it's not my own. Just curious how this subject is approached in a professional setting.