We informed Dr Ho that we preferred the Happy Call method to make okonomiyaki as it was more straightforward and okonomiyaki resembled the shape of pancakes, making them the ideal shape for flipping. However, Dr Ho was concerned that the design may prove to be too simple for MnT and pancake flipping machines were already commercially available. Dr Ho also recommended us to explore alternative ideas, such as automatic stir-frying machines or a multipurpose robotic induction cooker.