## **Why Rice Water Boils Over in the First Place**
To stop rice from boiling over, it helps to understand what’s going on inside the pot.
### **The Role of Starch**
Rice contains a high amount of starch. When rice cooks, starch granules are released into the water. As the temperature rises, these granules swell and thicken the liquid.
That starchy water forms **stable bubbles**—unlike plain water bubbles that pop quickly. These bubbles stack on top of each other, creating foam that climbs the sides of the pot.
### **The Boiling Point Problem**
Once the water reaches a rolling boil, steam pressure builds rapidly. Because the starchy foam doesn’t collapse easily, it traps steam underneath, forcing the liquid upward.
Eventually, gravity loses — and the rice water spills over.
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