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Step 1
Pour some milk (about 2 cups) into a rectangular cake pan or baking dish.
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Step 2
Scatter numerous drops of food coloring in several different spots in the milk.
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Step 3
Squeeze some dishwashing detergent into the milk (especially near the food coloring drops).
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Step 4
Gander at the wonderful firework display going on right before your eyes inside the cake pan. The "fireworks" are the result of the liquid dishwashing detergent separating the fat in the milk, thus causing it to move.
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Step 5
Add more liquid detergent to the milk and food coloring when you see that the display is dying down. Watch as the firework show starts all over again.









