But you’re saying “BETH! My smoothie is too liquify, what should I do?” Pour the layer that is too liquidy into a plastic bag and put it in the freezer for a while and it will thicken up.
Blue Smoothie
I want to address the blue layer.
I tried to make a blue smoothie using just blueberries, yogurt, and a banana. As much as I wanted it to be blue, it was purple.
So to get the blue layer to actually be blue, I simply repeated the yellow layer (since it’s the lightest color) and added blue food coloring. A rainbow just isn’t a rainbow without blue!
If you are opposed to using a small amount of blue food coloring to achieve the blue layer, it’s totally fine to skip that layer!
If you want to go the all natural route, here is a tutorial for how to make natural blue food coloring, or you can buy natural blue food coloring here or here as well.
Once you have prepared all of the smoothies, carefully layer each smoothie, in color order in a glass.
I like to use a spoon to gradually add each smoothie color, making sure that I don’t pour too much in too fast, otherwise the colors may mix too much.
There we have it – the ultimate rainbow smoothie!