Twist Silicone Mould 16x16x6cm. Ready to take your desert game to the next level? Use the Geometric Heart Silicone Mould to achieve Michelin Star standards and make an impact at your next function. Made from high-quality silicone, it is suitable for the oven and freezer and easy to use. For best results ensure the desert is frozen before pealing the mould off and make it extra special with a mirror glaze or a Velvet spray.