2 tablespoons water
1 teaspoon powdered gelatine
1 1/2 cups frozen mixed berries, thawed
2 cups low-fat vanilla yoghurt (I used nestle diet because thats the one mum liked. Yoplait Forme is also pretty similar in calorie content).
Place water in small bowl (I used a coffee mug), add gelatine and mix well. Puree berries until smooth (you can strain it here to remove the seeds, I like crunchy so I didn't bother). Add berries and gelatine to yoghurt. Mix until combined. Pour into moulds. Freeze until solid.
If you have trouble getting them out of the moulds, run them under some cold water which will help release them.
(makes 8 at 64 calories each).