When I took a cake course we used a super stiff icing too. The instructor explained that it was so that what we were learning to pipe would hold and that if we substituted the recipe she'd know because anything else would be too soft. Just use if for the course as your "training icing" but you'll probably use something else for your other cakes because that stuff is super sweeeetttt. Have fun in class!!!
2/7/10 at 12:13pm