I've now attempted mandelbrot twice and I just can't get it right. I followed a recipe used by an in-law and incorporated her tips as well but my cookies are coming out stalish tasting rather than crisp and light. What am I doing wrong? Is it possible that I'm overmixing the batter? I use a cheap hand-held mixer. Or do you just have to have a gene for baking? I'm throwing my hands up in the air! Any advice/suggestions would be greatly appreciated.