Have you ever wondered what separates a good bake from an absolutely unforgettable one? What's the secret ingredient that professional pastry chefs reach for when they want to create something truly special? And why does that vibrant green colour in high-end desserts always seem so much more intense than anything you can achieve at home? Pistachio Paste   The answer, more often than not, is pistachio paste. This incredibly versatile ingredient has been quietly revolutionising