Use triangles to represent your source of data. In fritz processing, you will use cream as the source.
Use rectangles to represent the process of converting the cream into butter. The process in fritz processing involves a cylindrical tank and an extremely high-speed blade. You also need a trough and a drainage mechanism. Use arrows to show how the cream goes through all of the various processes. The sequence will prove vital to the learner.
Use open-ended rectangles to represent the storage containers of the final product: butter. You can use tubs, boxes or other containers depending on the actual process you use for fritz processing.