I've been making macarons for awhile now and have had moderate success but they have not been perfect. I usually get them to either look perfect on the outside but a little hollow on the inside (using a silpat) or they're perfect on the inside but misshapen on the outside (parchment that puckers). Has anyone tried "reusable parchment" for macarons? I see it on Amazon and am intrigued. It seems to be a cross between a silpat and parchment? Any advice would be greatly...