The pressure finally overcomes the pericarp's resistance and it bursts — the steam and starch expanding to form a foam that quickly cools and dries in the air.

最终压强超过了果皮的阻力，于是就爆开了——水蒸气和淀粉膨胀形成了一个泡沫，在空气中快速冷却、干燥。