It’s a recipe I have never seen fail or flop,” Mary McEvoy assures Irish Country Living as she passes me a bright-pink apron.Considering I’d get in a flap over a batch of rice crispy buns, I’m not sure I share her confidence given the ambitious task ahead: a chocolate cake with silky ganache, buttercream rosettes, handmade truffles, sugar-craft flowers and – wait for it – bubble wrap chocolate. But as Mary is the woman behind A Slice of Heaven Kilkenny Cookery School, I suspect I’m in safe hands.