Ginger Crunch recipe (aka New Zealand ginger slice / iced ginger slice) This NZ cafe tray bake with a buttery shortbread/biscuit base and a glassy ginger icing is made with golden syrup. Pour hot icing on a hot base, score into slim fingers, and it’s even better on day two. If you make this, your Kiwi friends will be impressed… especially if you call it a slice.