use real butter

I’ve had matcha on my mind lately. You just can’t make real green tea any pastry without matcha, the finely ground green tea. I even dreamt about what I was going to make, but this morning I changed my mind and opted for an opera-like cake. I could use up my earl grey infused ganache and turn some other chocolate ganache into glaze. All I needed to make was the matcha spongecake and the buttercream.