1. Combine 1 L (4 cups) sliced or crushed berries with 125 mL (½ cup) sugar, let stand 30 – 45 minutes or until juice comes from berries, reserve 250 mL (1 cup) liquid.
  2. Soak 25 mL (2 tbsp) gelatin in reserved liquid; heat to dissolve.
  3. Combine berries, gelatin and 500 mL (2 cups) plain yogurt; puree until smooth.
  4. Pour into paper cups; cover each with a piece of foil; insert a wooden Popsicle stick into each cup; freeze until hard.