[gumby]

I believe frosting is mostly fat by weight. Nevertheless butter beats it, pretty much by definition.

[x43b]

https://www.pillsburybaking.com/products/creamy-supreme/clas...

Looks like a >4:1 carb:fat ratio by weight.

[fiblye]

But eating cake frosting by the spoonful is far easier and more pleasing than downing pure butter or olive oil.

(speaking from experience)

[DanBC]

And climbers already have an equivalent of cake frosting: kendal mint cake: https://en.wikipedia.org/wiki/Kendal_Mint_Cake

[gumby]

Thanks for looking this up!