To get two of them, you may have to do a significant amount of Tera Raids, so you want to make every single sandwich count. Herba Mystica is required to cook Shiny Fighting Sandwich in Pokemon ...
They have a 1/50 chance of appearing on any wild Pocket Monster in Pokemon Scarlet and Violet. Here they are, as well as the weather associated with them: That's how you can get all the marks in ...