Material: mold, mineral water (or cold water)
1. Take a special ice cube mold, wash it and dry it.
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2, prepare a glass of mineral water or cold water.
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3. Pour the water into the ice box of the mold. Be careful not to pour it too full. Cover the mold and put it into the freezer.
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4, after four hours, remove, knock the back of the ice tray to take out the ice.
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5, if the ice box is hard to take out, flush the front of the ice box with cold water and repeat step four.
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