How to Make It:
Step 1: In a blender, combine the frozen mango, pineapple and banana. Run the açaí packets under warm water for about 10 seconds to let them thaw a bit, then cut them open and pour the açaí pulp into the blender.
Step 2: Pour in the cold water, securely fasten the lid, and start blending on the lowest speed until you can gain traction, increasing to high speed as it becomes available. If necessary, pause the blender to scrape down the sides, and add ¼ cup to ½ cup more water if it just won’t blend.
Step 3: Add 1 to 2 tablespoons lime juice, to taste, and blend briefly to combine.