CruxBuzz on Instagram: "A manual grain puffing demonstration shows how rice and other grains expand using pressure cooking methods. The operator heats grains inside a sealed chamber, building pressure before using a wooden lever mechanism to release it. The sudden decompression causes moisture inside each grain to flash into steam, expanding the kernels into crispy puffs. This technique has been used across Asia as street food production, with similar methods documented in China, Korea, and Japa