1Put the yogurt in a large measuring cup. Gently whisk in the lemon juice and honey. Stir in the mashed banana.
2Pour the yogurt mixture into the ice cream bowl.
3Set the ice cream maker to the desired setting and churn.
4Once the yogurt is frozen, spoon into chilled bowls as a soft serve or transfer to a freezer-safe container, just large enough to contain the yogurt. Freeze for 3-4 hours or overnight for a firmer yogurt, suitable for scooping.
5Store yogurt in the freezer for up to 2 weeks. It will become very firm after freezing overnight, so remove from the freezer and stand at room temperature for 5-10 minutes before serving for easier scooping.