Bring the mahlepi and water to a boil in a small pot. Remove from heat, set aside to cool. Strain, reserve the water and discard the boiled seeds.
*Mastic or mastiha is an aromatic crystal resin that Greeks use to flavor all sorts of things, from olive oil to bread and cakes. You can find it online at the MastihaShop.
**Mahlepi is the flavorful kernel of a specific cherry variety. You can find it in specialty spice shops and at Greek food stores across the world.
Happy New Year!