I am proud of these. It’s taken a lot of tries but I’m happy to sacrifice my waistline for culinary perfection - and I reckon I've nailed it. This is a biscuit that will be mostly familiar to New Zealanders and maybe other antipodeans. It's similar to the American 'whoopie pie' and sponge kisses, but it's definitely something I've missed from home since I've been living in the UK. The biscuit is a fluffy ginger sponge, gloriously gingery and light, and the buttercream is laced with honey and…