The gianduja truffle is a fine blend of hazelnut paste and milk chocolate encased in a thin shell of bittersweet chocolate. Shelf Life: Our gourmet chocolate truffles are handmade with the freshest and premium ingredients sourced from European regions. We don't use any preservatives or artificial flavors in making them. The chocolates can be frozen for up to 6 months in an airtight container. The chocolates will stay fresh for up to 3 weeks if stored in a cool and dry place. We recommend storing them at a temperature between 55 and 65 degrees, as this ensures that the emulsion of cocoa solids and cocoa butter remains stable.