Quick and easy cooked flour buttercream (ermine frosting) recipe that's stable, smooth and creamy. perfect for piping and decorating cakes and cupcakes. this cooked flour flour buttercream (ermine frosting) recipe is from a very old family cook book. i have used it on my chocolate cake, moist red velvet cake and even my mango cherry cake and it always tastes amazing. this frosting is soft, creamy, fluffy and tastes very light and airy. this recipe is very different than my classic american buttercream frosting and between the two, i think i like this one better. the addition of flour is the.