my youtube kids made a 13.5 cup batch of mousseline buttercream. part of it was flavored with top quality strawberry butter for ROSE’S heavenly CAKES: Chocolate-Covered Strawberry Cake (page 91).
the strawberry mousseline turned divine. it is now stored in vacuum at -20oF for the day (or year!) the cake is completed. here is a picture of the youtube taping called 3-frostings: strawberry mousseline buttercream, classic german chocolate cake filling, and chocolate snowball hot fudge sauce. divine!
P.s. The piping on the half star shaped cake with strawberry mousseline is all my YouTube kids doing!