The above drink is great for hot days, like an alcoholic Slush Puppy for adults.
It's very very more-ish and hard to resist 'just one more'. So I had about 5 of them last Saturday, and I was glad that I had decided to go for single measures of whisky and not doubles otherwise I'd have been absolutely sozzled. The combination of simple syrup, whisky, fresh mint, and the whole glass packed from top to bottom with crushed ice and drunk with a straw is quite a heady mix.
The drink is so more-ish that I may well avoid getting any more living mint plant in for the upcoming heatwave forecast for this Mon and Tues as I'll be very liable to over do it even more with the extra heat that has been predicted.