It smells and looks like every other gin and tonic I've ever had; effervescent, light and citrusy. Fortunately, I poured this heavy so I get a proper Silent Pool experience. It's potent ...

Once the sugar has dissolved, remove from the heat. Add the gin, tonic, lemon juice and the grated Bramley apple. Set aside to cool completely, then pour the mixture into a plastic freezer-proof ...