AN INSTANTANEOUSLY IGNITABLE SOLID FUEL COMPOSITION COMPRISING A PERCHLORATE, A COMBUSTION SUPPORTING SUBSTANCE SUCH AS RICE BRAN, OIL MEAL, POWDERED BAMBOO AND SODIUM OXALATE, AN ADHESIVE SUCH AS DEXTRIN, A COMBUSTION BUFFER SUBSTANCE SUCH AS CLAY, CALCIUM HYDROXIDE, AND GRANULAR FOYAITE, AND A CARBONACEOUS SUBSTANCE SUCH AS POWDERED CHARCOAL, POWDERED ANTHRACITE COAL AND A POWDERED COKE HAVING ABOUT 10-15% BY WEIGHT OF VOLATILE MATTERS.