Frozen Limes Filled with Sangrita and Tequila

Instructions

1. Squeeze lime halves in citrus juicer to extract as much juice as possible.
2. Transfer 3/4 cup lime juice to bowl; cover and chill.
3. Reserve remaining juice for another use.
4. Using scissors, cut out membranes from hollowed lime halves.
5. Enclose lime cups in resealable plastic bag.
6. Freeze until frozen, about 4 hours.
7. Mix orange juice, 3/4 cup lime juice, grenadine, salt, and cayenne in blender.
8. Transfer mixture to pitcher.
9. Cover sangrita and refrigerate until cold, about 2 hours.
10. (Can be made 1 day ahead.
11. Keep sangrita chilled.
12. Keep lime cups frozen.)
13. Arrange frozen lime cups on serving tray.
14. Pour sangrita into 12 lime cups; pour tequila into remaining 12 lime cups and serve immediately.