請問一下要怎樣才能把咖啡渣燒成灰?
咖啡渣裡面顯然含有太多水分
曬過就是曬不乾
曬完以後點火還是燒不起來
不知道有甚麼辦法? 把它變成 carbon?
徵求達人
※ 編輯: sansia 來自: 36.234.161.127 (09/22 09:28)
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