Truffle Mushrocks or Gallindoii truffles are available in a 15 grams vacuum packed quantity. Because of this package, the truffles can be kept for a longer time.
A sclerotium is a living product. It might be possible that air (especially CO²) might be trapped in the package. This will make the sclerotia continue to grow and white “hairs” will appear on the outside of the truffles. This is the mycelium and shows the truffles are healthy. This is edible and doens’t affect the trip.
Upon receipt of the package, store it in the refrigerator (2-8°C) right away. It can be stored this way until the best before date as written on the package.