A professional label is not required, your cooking style praised by your friends and family is enough to do this. If you are specialist in preparing some cuisines or baking or traditional sweets and you feel people around you are looking for the recipe, no shame in calling them all together and give them some recipes and dishes with some decent charge for teaching the same.
People love to eat new food, taste something different than their routine menu. So people are ready to learn properly before giving a try. Make use of it, even you are from a village don’t worry your traditional dishes are in need. Your valuable time and your kitchen is the class room for it.
In cities people are taking classes every week so you make money being at home.