Place a metal loaf pan (or freezer safe container) in the freezer to chill.
In a large bowl, whisk together all of the ingredients until smooth. You can also blend the ingredients together in a blender.
Churn according to the directions for your ice cream maker. I recommend churning it until your frozen yogurt resembles the consistency of soft serve.
Transfer to your chilled container, cover and return to the freezer.
Freeze for a minimum of 4 hours before serving. Keep leftovers covered well in the freezer for up to 4 weeks.
Recipe Notes
This frozen yogurt uses minimal natural sweetener to let the tangy yogurt flavor shine. For something that tastes sweeter, use vanilla Greek yogurt instead of adding more agave, which can throw off the balance of liquid.
You can use honey or another liquid sweetener of your choice in place of agave. Keep in mind that if the sweetener has a pronounced flavor (like honey), you will be able to taste this in the frozen yogurt.
For this recipe, either natural or Dutched cocoa powder will work.
When the churning is done, you can quickly fold in about 1 cup of mix-ins of your choice, like chocolate chips or nuts.
If you don’t have an ice cream maker, you can churn this by hand by placing the blended mixture in a shallow metal bowl in the freezer. Every half hour, give the mix a vigorous whisk and then return to the freezer. After three to four hours, you will have frozen yogurt.