Start by preparing the ingredients: Zest the whole orange and set aside. Then juice the orange. Also, pit the cherries if using fresh ones and if using frozen cherries, start by thawing them for a few seconds in the microwave.
In the food processor, add 20 pitted cherries (keep the other 10 aside), the orange juice, ground chia seeds and agave nectar. Process until you reach a smooth texture, about 30 seconds.
Add the remaining 10 cherries and pulse once or twice, or until they are roughly chopped, but not completely processed.
Transfer the cherry mix in a medium bowl. Add the orange zest and mix well.
Let sit in the fridge for at least 2 hours to allow the jam to set. Enjoy cold. Keep in the fridge in an air-tight container for up to 5 days.
