需要提前准备好的材料包括：紫薯100克、牛奶200克、热水 适量。
1、第一步把准备好的紫薯去皮切片，蒸熟。
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https://iknow-pic.cdn.bcebos.com/d31b0ef41bd5ad6e98b7d27a8fcb39dbb7fd3cd7"/>
2、蒸熟后放入杯中，加入热水。
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https://iknow-pic.cdn.bcebos.com/622762d0f703918f3472845a5f3d269758eec4fb"/>
3、插上电源，自动开始工作。
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https://iknow-pic.cdn.bcebos.com/e61190ef76c6a7ef33581cb6f3faaf51f3de6620"/>
4、时间到后把紫薯取出。
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https://iknow-pic.cdn.bcebos.com/7c1ed21b0ef41bd5e91d5e645fda81cb38db3dd7"/>
5、然后把紫薯倒入另外一个杯体中，加入牛奶。
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https://iknow-pic.cdn.bcebos.com/e4dde71190ef76c65bac4fbb9316fdfaaf516720"/>
6、插上电源，进行加热。
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https://iknow-pic.cdn.bcebos.com/faedab64034f78f0ac12226377310a55b3191c00"/>
7、时间到后倒出，完成了。
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https://iknow-pic.cdn.bcebos.com/80cb39dbb6fd526691148484a518972bd4073666"/>