Make sure the berries are completely thawed and drained. This recipe works best if the berries and yogurt are room temperature.

Place the berries and yogurt or kefir in a blender and blend until smooth.

Pour half of the juice into a medium-sized stainless steel bowl or glass baking dish.

Sprinkle the gelatin over the surface of the juice and allow it to bloom for 5-10 minutes.

While the gelatin is blooming, pour the other half of the juice into a small saucepan and bring it to a simmer.

When the juice in the saucepan is heated, remove it from the heat and stir in the honey or lime juice, if using.

Add the warmed juice to the cool juice with the gelatin and whisk until smooth.

Immediately pour the juice and gelatin mixture into the blender with the fruit and yogurt.

Blend on LOW speed until just combined.

Pour into silicone molds or into a greased glass baking dish and place in the refrigerator until the gelatin has set.

Serve when cool.