Start by blooming gelatin. Place the water in a shallow dish and sprinkle gelatin packages over the water, Set aside for 5-7 minutes until this begins to firm up.
In a blender add in the Kefir and berries, blend until smooth and set aside.
In a small sauce pan on low heat, add in the heavy cream, bloomed gelatin. Begin to stir until all the gelatin has dissolved. Continue stirring, let the mixture warm up but do not let it boil. Turn off heat and let it cool.
Add in the cooled heavy cream and gelatin mixture to the kefir in the blender. Give it a good mix and pour into greased molds. Place molds in the fridge and let set overnight for best results.
Once ready to be enjoyed, unmold onto a plate or container with lid for storage.