Because this was the first time I made these, it took a loooong time. By the time I got to making the filling, I had run out of enthusiasm. In a hurry to have a try, I sandwiched 2 macarons together with some cream. (Gasp!) Luckily it tasted okay and it renewed my enthusiasm, and I got back into it and made a chocolate butter cream filling. Learnt many lessons for the next batch!