| • | Mix sugar and cornstarch in a medium saucepan.
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| • | Pour the evaporated milk.
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| • | Simmer over medium heat and stir until it turns thick and bubbly.
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| • | Remove and cool till lukewarm.
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| • | Add yogurt and vanilla.
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| • | Keep in refrigerator until cold.
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| • | Melt the chocolate.
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| • | Pour it gradually into yogurt mixture. Stir it gently.
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| • | Freeze the mixture in ice-cream maker.
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| • | Chocolate Frozen Yogurt is ready. |