Coconut Horchata

1 cup uncooked white rice

1 cup almonds

1 cup sweetened flaked coconut

3 cups boiling water

1 (14 ounce) can coconut milk

1 (14 ounce) can sweetened condensed milk

5 cups cold water, or more as needed

5 cups ice

Place rice, almonds, and coconut flakes into a food processor. Process until ground to the consistency of sand. Pour rice mixture into a bowl and stir in the boiling water. Cover and rest for 6 hours or overnight.

Strain rice mixture through a sieve twice, discarding the ground rice, almonds, and coconut. Stir in the coconut milk and sweetened condensed milk. Stir in the cold water and serve over ice.