Step 1

In a large bowl, combine milk, lime juice, heavy cream, salt, and sweetened condensed milk; whisk to combine.

Step 2

Cover the bowl with the ice cream base with a lid or plastic wrap. Then, transfer the bowl to the refrigerator for 4 hours, or up to overnight. Not required, but recommended.

Step 3

After chilling, pour the key lime ice cream mixture into your ice cream maker, and churn the ice cream according to manufacturer's instructions.

Step 4

After churning, stir 1/3 cup graham crackers into ice cream. Then, spoon ice cream into a freezer-safe container, and cover and freeze for 1 hour or until firm.

Step 5

Sprinkle each serving with 1 teaspoon graham crackers.

Step 6

Garnish with lime wedges.