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67% fat / Fat to 500g flour is 330g
3:1
Always half fat to flour i.e: 8 ounces flour and 4 ounces of fat.
The proportion of fat to flour depends largely on the type of pastry dough you are talking about, and what your fat source is. For pie crust dough, I've seen the ideal ratio described as 1 part fat to 2 parts flour. However, that ratio applies just to the ratio of one ingredient to another, not to the ultimate percentage of fat involved. Butter and shortening, for example, are not equivalent, and don't have the same fat content: shortening is 100% fat, whereas butter is around 80% fat (and the fat content can vary by brand). If you were referring to actual pastry dough, the percentage of fat to flour is going to differ more greatly. A popover dough for example, is going to contain a lot less butter than a pastry based on a puff pastry dough, croissants, for example.
Pastry flour is a relatively low-protein flour that is often called for in making biscuits, cookies, pie crusts, and pastries. The protein content of any given type of flour determines how tender, strong, elastic, stretchy, pliable, etc., the dough is that you make with it, and also the texture of the finished bread, waffle, cookie, croissant, etc. Bread flour, for instance, weighs in between 12% an 13% protein, and helps produce wonderfully well-risen, chewy loaves of bread. Cake flour, at the low end of the spectrum, 5% to 8% protein, is much less elastic, and helps produce wonderfully tender cakes. Pastry flour is up only one notch, at 8% to 9% protein, and lets you create baked goods with a little more body and texture than cake flour, but still with the tenderness one associates with a well-made biscuit or pastry. It can be a challenge to find pastry flour. Even well-stocked supermarkets seldom carry more varieties than cake flour, all-purpose flour (9% to 12% protein), and bread flour. If you can't find pastry flour, you can mix you own by combining cake flour and all-purpose flour in a ratio somewhere between two parts cake flour to one part all-purpose and one part cake flour to one part all-purpose.
why is ration and proportion inportant when making pastry
All pastries except filo/phyllo and strudel are primarily flour and butter, in a ratio between 1:1 (puff, danish, croissant) to 3:1 (choux). Shortcrust is normally a 2:1 ratio. Sweet pastries will also normally contain eggs and sugar.
The ratio differs from recipe to recipe.
1 Tablespoon Cornstarch = 2 Tablespoons flour
2 to 1
been
Use wholemeal flour instead of white - OR - replace some of the white flour with bran.