Enjoy homemade Key lime pie ice cream by flavoring a simple ice cream custard base with Key lime zest, Key lime juice, and graham cracker crumbs.
1/2 cu. granular sweetener for ice cream
2 tbl. cornstarch
1/8 tsp. salt
2 cu. 2% reduced-fat milk
1 cu half & half
1 egg yolk
1 tsp. Key lime zest
1/3 cu. Key lime juice
1/2 cu. coarsely crushed graham crackers
Whisk together first 3 ingredients in a large heavy saucepan. Gradually whisk in milk and half-and-half. Cook over medium heat, stirring constantly, 8 to 10 minutes or until mixture thickens slightly. Remove from heat.
Whisk egg yolk until slightly thickened. Gradually whisk about 1 cup hot cream mixture into yolk. Add yolk mixture to remaining cream mixture, whisking constantly.
Pour mixture through a fine wire-mesh strainer into a bowl, discarding solids. Cool 1 hour, stirring occasionally. Place plastic wrap directly on cream mixture; chill 8 to 24 hours.
Pour mixture into freezer container of a 1 1/2-qt. electric ice-cream maker, and freeze according to manufacturer's instructions; stir in Key lime zest, Key lime juice, and crushed graham crackers halfway through freezing. Let stand at room temperature 5 to 10 minutes before serving.
*Granulated sugar may be substituted.