I created this infographic in response to my previous post “Proper Lambanog Processing“. It was a laboratory setup but the method is exactly similar to traditional coconut vodka distillation done beside riverbanks.
(Click image for larger view)
You can get alcohol hydrometer at your nearest Laboratory Supplies. The one used for this infographic was bought for 750 pesos. If you have enough budget, wine refractometer is a more expensive alternative but it is easier to use.