2. Stir 1/2 of this gelatin mixture into 1/4 cup hot water (or heat gently over a double boiler or carefully in the microwave) until the gelatin is fully dissolved. Discard the remaining gelatin.
3. In the food processor, blend the ricotta cheese until smooth, and then add the blueberries, sugar, and gelatin, blending after each addition until creamy.
4. Beat the cream until thick (not stiff), and then fold in the blueberry mixture.
5. Churn in an ice cream maker to the desired consistency (check the manufacturer's directions).
Note: I had to 1/2 this recipe because I have a small ice cream maker--the kind with the container that you pre-freeze.)
6. Serve when set, or place in a chilled container and freeze (this gelato freezes pretty hard, so you will need to thaw slightly before serving).
I tried it again without the gelatin or whipping cream, but adding eight ounces of cream cheese. (I do well with both ricotta and cream cheese, which tend to be a little lower in casein.) This was a great variation - a great, cheese-cake-y taste and consistency! So go for either one!