Strawberry Frozen Yogurt

Place sugar and egg white in top of double boiler over simmering water.

With electric mixer at high speed, beat constantly until mixture thickens and forms soft peaks, about 5 to 7 minutes.

Remove from heat.

Add yogurt, strawberry purée and vanilla to thickened mixture; stir until combined.

Pour mixture into container of ice cream freezer and process following manufacturer's directions.

Transfer to storage container, cover and freeze.