I have the Cake Bible book and I can not find the recipe for SMBC...does she calls it 'Silk BC' or something like that?? what page is it on??
Sorry - to clarify I don't think the Cake Bible has an SMBC recipe - the IMBC recipe is Mousseline Buttercream (p244). I haven't tried the other buttercream recipes in the Cake Bible.
The SMBC recipe I use is:
200 g sugar
150 g egg whites (I use egg whites from a carton)
2 cups (1 lb) softened unsalted butter
1 tsp vanilla
Dissolve egg whites and sugar in mixer bowl over double boiler to 55-60 C, stiring constantly. Whisk egg whites on medium high to medium stiff peaks - ensure whites are completely cooled. Add butter in chunks, then vanilla.