How to make buttercream filling<br>Place the butter in a mixing bowl and beat it until it is smooth and fluffy. Use a handheld mixer or a food processor with a whisk attachment. It will make things much easier.
Buttercream filling is sooth and fluffy
( z1 fill :ARG2 ( z2 buttercream ) :mod ( z3 fluffy ) :mod ( z4 sooth ) )