红枣桂圆水可以用铁锅煮，下面是具体做法：
准备材料：红枣15颗，莲子15颗，桂圆肉15颗，红糖1小块，水适量
1、将红枣、莲子、桂圆肉洗净备用。
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2、将桂圆、红枣、莲子放入铁锅中，加水大火烧开。
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3、大火烧开后转小火继续炖煮10分钟。
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4、10分钟后，加入红糖（红糖量可依据个人口味调整）继续炖煮40分钟即可。
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5、40分钟后出锅装碗就可以开始享用红枣桂圆糖水了。
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