Allow the vanilla ice cream to soften at room temperature for approximately 10-15 minutes, or until it is easily stirrable but not completely melted.
While the ice cream is softening, roughly chop the Sour Patch Kids candy into smaller pieces. This helps ensure even distribution throughout the ice cream.
In a large bowl, combine the softened ice cream and the chopped Sour Patch Kids candy. Gently fold the candy into the ice cream until it is evenly distributed. If the ice cream is too firm to easily incorporate the candy, add milk or cream in small increments until the desired consistency is reached.
Transfer the mixture to a freezer-safe container. A loaf pan or an airtight container works well.
Cover the container tightly with a lid or plastic wrap, pressing the wrap directly onto the surface of the ice cream to prevent ice crystals from forming.
Freeze for at least 4-6 hours, or until the ice cream is firm.
Before serving, let the ice cream sit at room temperature for a few minutes to soften slightly. This will make it easier to scoop.
Scoop the Sour Patch Kids ice cream into bowls or cones and serve immediately.
Optional Tips: For a more intense sour flavor, consider using Sour Patch Watermelons in addition to, or in place of, the original Sour Patch Kids. For a smoother texture, pulse half of the candies in a food processor before adding them to the ice cream. A homemade vanilla ice cream base can be used for a richer flavor profile; adjust sweetness as desired to compensate for the candy's tartness.