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Pop Rocks are made in the beginning just like hard candy. Sugar, high fructose corn syrup, lactose, and water all boiled together. Then they pump 600 psi of CO2 into the liquid. While the liquid cools most of the gas escapes and causes the mixture to shatter into tiny jagged pieces. When the sugar coat is melted the CO2 gas is released causing the "pop".

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14y ago

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