How do you make MMF?
You'll find a recipe for MMF under the recipe section on here
Yep, recipe in the recipe section. Basically: melt marshmallows, add salt, flavorings, and corn syrup. Add sugar, knead like bread dough until you have...fondant! A little messy, but easy and cheap.
Here's a recipe for MMF, by MacsMoms: http://cakecentral.com/cake_recipe-7351-Marshmallow-Fondant---MacsMoms-BC-flavored-variation.html
Good Luck, there are many many many post on MMF in the forum, as well as many many recipes here on CC