Typically marshmallows are not vegan because they contain gelatin. However, they have gelatin-free vegan marshmallows available. Vegan marshmallows can be a little hard to find if you don't live next to a Trader Joes or Whole Foods. Whole Foods almost always carry Dandies vegan marshmallows. Trader Joe's marshmallows are also fantastic, and they have mini ones and regular-sized ones, depending on the time of year.