Use an ice-cream maker.
In a large bowl, combine the cream, milk, sugar, and vanilla.
Follow the manufacturer's instructions for freezing. Once the desired consistency has been reached, stir in the chocolate.
Serve immediately or freeze in an airtight container. This recipe makes 1 quart of ice cream.
Please read what you write. The title is "ice cream maker free chocolate ice cream", however step 1 of the directions is "use an ice cream maker."