Recipe and foods

You create personal recipes using the FOOD > Recipes feature, then your personal Recipes show up in the Recipe list for you to log to your Food Diary.
You create personal Foods using the FOOD > My Foods > Create Food feature when you can not find an item in the Food Database, which should be infrequent. Also, if you edit a food item found in the Food Database, you will become the temporary "owner" of that shared food item and it will temporarily be found in your My Foods list.
Please see these articles, and many other helpful articles, on the MFP Help pages...
myfitnesspal.desk.com/customer/portal/articles/1469295-how-does-the-recipe-importer-on-the-website-work-
myfitnesspal.desk.com/customer/portal/articles/838023-how-do-i-add-an-item-to-%22my-foods-%22