The average rehydration ratio changes according to drying method. It was 1.65 when the drying was achieved by microwave oven followed by hot air cabinet dryer. Meanwhile, it was 1.77 when the drying was achieved by hot air cabinet dryer followed by microwave oven as listed in Table 1. The rehydration ratio was 1.57 when the drying process was started and finished in hot air cabinet dryer alone.