I made the Vanilla Frozen Yogurt a few days ago, and am really enjoying it. The drained yogurt adds a bit of tang and a wonderful, rich texture.

I just made up a half sized batch of the Frozen Yogurt using David's recipe as a guide. The recipe is found on
101 Cookbooks.I used Greek Yogurt (the full fatty one with cream and whole milk), added a vanilla bean and instead of using granulated sugar I used sugar syrup left over from making candied orange peel.
The yogurt mixed up wonderfully and tastes fantastic. However, the texture after an over night stay in the freezer is not so great. Now its crumbly and icy. Even with letting it soften up at room temperature, it seems to go straight from icy crumble to liquid- no smooth creamy mouthfeel stage unless its melting.
Did my use of sugar syrup cause this?
It strikes me as a problem in the microstructure- like the ratio of air/ice crystals/fat is off. Or a problem in emulsifying?

At least it tastes great