Step 1

Peel kiwi, cut into thirds, and blend until mostly smooth. Press contents of blender through a fine mesh strainer and place into a small bowl. Give blender a quick rinse.

Step 2

Add pineapple juice, watermelon juice, rice milk, coconut milk, lime juice, simple syrup, and a few drops of blue food coloring to blender. Measure out 2 tablespoons of kiwi pulp and add to blender. Blend until fully combined.

Step 3

Add xanthan gum to blender and blend for an additional 20-30 seconds - the blue milk should thicken up a little - add more xanthan gum 1/8 teaspoon a time until desired consistency is achieved. Adjust food coloring until desired blue coloring is achieved.