I used bright-red sweet cherries, but feel free to mix in some of the multi-hued varieties, such as Queen Anne (incongruously called ‘Napoléon’ cherries in France) and Ranier. If you can get sour cherries, a mix of those with the sweet ones is cherry paradise.
Storage: The cherries will keep up to one week in the refrigerator. They can be frozen for up to six months.