西瓜中的主要糖分是果糖，果糖有一个特点：温度越低越甜。
室温状态下，果糖的甜度约为蔗糖的 1.2 倍，只是略微甜了一点点。但如果冰镇到 0 ℃，那果糖的甜度会升高到蔗糖的 1.5 倍左右。
这就意味着——经过冰镇的西瓜，尤其是冰镇到 0℃ 的西瓜，确实吃起来更甜。
除了西瓜，还有很多水果也含有丰富的果糖，有着「越冰越甜」的特点，比如梨、葡萄、苹果、香蕉、草莓……放进冰箱冻一冻，快乐立马加倍～[/cp]
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