Recipe November! Lime and Ginger Cordial

Pour 200ml boiling water into a large heatproof jug, add sugar until the volume hits the 300ml mark, and stir until the sugar's dissolved.
Slice 3 limes and a thumb-sized lump of ginger thinly and stir them into the syrup. Cover and leave overnight then strain into a bottle. Dilute to taste with sparkling water. It's got a nice bitter gin-and-tonicy tang to it.