Substitute for Marshmallows?
if you go on epicurious.com, they have a recipe for vegan marshmallows using a vegan gelatine substitute (probably agar agar, a gelatin derived from seaweed). I find their recipes are always pretty good. heres the link: http://www.epicurious.com/recipes/food...
Thinning Canned Chocolate Frosting?
honestly, why would you want to use canned frosting when you can make a glaze easier, cheaper and that tastes better without all the fake stuff? I use a chocolate ganache as a glaze - in the microwave, using a 2 cup glass measuring cup, heat up 1/2 cup cream...
