The moist crumb, enriched with golden caster sugar and natural yoghurt, is the perfect backdrop for the bold syrup that gives each layer a boozy kick. Topped with a light and tangy lime buttercream, this cake is a feast for the eyes as well as the palate. Ingredients: Cake: 225g salted butter, softened, plus extra for the tins 225g golden icing sugar 4 large eggs 225g self-raising flour 2 limes,…