Microwave them for 1 min on 800w.If it's not crisp enough, cook additional 20-30 seconds until it's crispy and dry.
To season the puffed mochi, mix dashi powder, sugar and soy sauce.Combine and cooknmn in the microwave for 30 seconds until the sugar dissolves. Add the rice cracker and toss really well using your spatula.
Sprinkle Aonori seaweed if you want.put them on a wire rack for a few hours to dry them out.
Keep it in an airtight container and store it at room temperature. Keeps its crispness for the next few days.