by Paul Winalski » Wed Dec 26, 2007 8:52 pm
Stuart,
Is the TJ's puff pastry made with butter or vegetable oil? That, IMO, is the big difference between the Pepperidge Farm (which is very good) and Dufour (which is superb). Dufour is made from butter, and this is one of those cases where the fat that you use makes all the difference. The water content in butter, so often a drawback in cooking, here is a positive asset, as it provides much of the steam to make the pastry puff out.
In my experience, just which fat you use in cooking doesn't matter in many cases--vegetable oil, lard, clarified butter--it comes out only insignificantly different.
Pastry is the best case I can think of where it does matter, big time. In the example I'm most familiar with, a proper Chinese flaky curried meat pie can ONLY be made with lard. Use anything else, and the result will be unsatisfactory. Ditto the pie crust my mother makes. You have to use lard or solid vegetable fat--butter or oil won't work. French puff pastry is the third case. It really needs to be made with solid butter (i.e., not clarified). Pepperidge Farm uses vegetable oil, and while their product is better than I can manage with my own unskilled hands (and with a HELLUVA lot less effort!), it's not as good as what can be achieved using butter as the fat ingredient.
-Paul W.