Beat the aquafaba with cream of tartar and honey/syrup on high until it forms stiff peaks.
Add arrowroot powder continuing to mix on high until very fluffy.
Add coconut oil. Beat on low for 5 - 10 seconds with either a hand mixer or a stand mixer until the whipped cream becomes rich and fluffy.
Notes
To create aquafaba, strain a can of white beans or chickpeas and reserve the liquid.
For a heavier frosting to be used on cupcakes or cookies, you can opt for coconut cream and powdered sugar, mixed with a hand mixer until peaks form.
The aquafaba recipe is great for things like strawberry shortcake, pie toppings, as filling in between two cookies, or as a dollop on top of fresh fruit or hot chocolate.