Depending on where you shop, semolina flour might just be called semolina; what you are looking for is pale yellow in color and ground to the approximate consistency of sand. When it comes time to serve soppa tal-qara ahmar, you can serve it topped with Parmesan rather than on the side, just keep in mind that a little goes a long way with this particular recipe so be careful not to over-do it. Don't let the name, "red pumpkin soup," fool you, normal pumpkin is used to make soppa tal-qara ahmar, it just takes on a deeper color from the addition of tomato paste.