The manufacturer recommends a mix of 8-10%, which is quite economical. I mixed it at 10% and let it sit for two weeks. The description says it will be a coconut, rum drink flavour. I was really looking forward to it as I have never had a Pina Colada. Theoretically it's white rum, pineapple juice and coconut syrup. The aroma is characterised by coconut and rum. The flavours also come through quite strongly, with the pineapple and rum dominating. The pineapple is a little too ripe to be noticeable alongside the rum. Both flavours come through well, but the coconut is very much at the back of the line. If I imagine a drink that actually contains pineapple juice, coconut syrup and white rum, I would not find this flavour suitable for a tropical beach. All this is entirely subjective, I'm sure there will be vapers who will be happy to steam it in their back garden pool .