After flipping through the pages of this book, I was on a mission like a thing posessed in search of flan rings, which the author lists as a "must have" to make his tarts. The tarts are so visually appealing, I had to find out for myself if they tasted anywhere near as good as they looked. I found four flan rings- at a rediculous $9 per four-inch ring. I couldn't see buying eight, which is the number that one recipe of pastry makes. But the results were worth it!! I tried two recipes. The first was a fully baked tart shell filled with ricotta cheese and topped with fresh berries. The second was a tart baked with almond cream and fresh cherries (my substitution for plum slices which the recipe called for). The cherry tarts looked like something I'd buy from a pastry shop- just gorgeous. The shells have a great short-bread like flavor and a much nicer crumb than many tart recipes. However, what they make up for in flavor, they lack somewhat in durability. They are somewhat fragile. Mr. Rubin's instructions are excellent, and though the first time through takes time and patience, it was not difficult. Anyone comfortable with pastry should have no trouble with the shells. The down side is the practicality. If you need many tarts at one time, the flan rings are expensive. I was able to fashion rings out of foil and shape the tarts with a foil ring inside a stainless steal ring. Once the pastry is shaped and trimmed, just slip the stainless steal ring off and the foil will hold perfectly fine for baking. The pastry dough handles easily, but the sharp rims of traditional tart pans will cut through it and ruin it before you have a chance to shape it.