"Kathy" > wrote in message
...
>I read recently that if one substitutes oil for shortening in baking, the
> result comes out greasy because shortening is whipped full of air and oil
> has no air. Still, it seems to me that if one knew the air-to-grease ratio
> in shortening, one could figure out an oil-for-grease substitution. I've
> been experimenting in cookies, muffins, biscuits, and pie crust and coming
> out somewhere between a third to a half cup of olive oil for every cup of
> shortening the recipe calls for. But that's just guessing. Does anyone
> know
> what the exact amount should be?
>
> (Of course, even with the exact amount, an oil-based product will be
> different than a solid grease-based product. I'll accept different, so
> long
> as it's still good and it means I can get away from using Crisco.)
>
> Kathy


Can't do it successfully on a substitition basis.

See below.

Dimitri


Oils do not act as a shortener because it is a liquid and won't cream with
crystalline sugar in the same way that solid fat does. Oils tend to coat
each particle of flour, which causes a lack of contact of moisture and helps
prevent gluten development. It reduces dryness and enhances flavor. I use
it sparingly in reduced-fat baking because it has the same number of
calories and fat grams as butter, even though it has less saturated fat.

Fat Substitutes (Fruit Purees)

Fruit purees, especially applesauce, are often used as fat substitutes. The
pectin from the fruit forms a film around the tiny air bubbles in the
batter, similar to what occurs when you cream solid shortenings with sugar,
but not as effectively. My favorite fruit puree for baking is unsweetened
applesauce. Not only is it readily available but it is inexpensive and
versatile because it doesn't impart any strong flavor to the final result.
Applesauce contains more pectin than other fruit purees, which helps to
retain the moistness of baked goods. Even if a recipe is flavored with
another fruit puree, I always add a little applesauce as well. You'll see
recipes here that use pumpkin, banana, and prune purees, among others.



http://www.baking911.com/pantry_subs_fats.htm



One of the few successful soy-free, corn-free solid shortening or hard
butter substitutes on the market is food-grade coconut butter (not cocoa
butter). Solid shortening and butter can be successfully substituted with
3/4 the amount of coconut butter in most recipes (by reducing the amount of
coconut butter, you are accounting for the extra water content in it).

BUTTER, UNSALTED AND SALTEDButter, Salted: If using 1/2 pound salted butter
(2 sticks), take out 1/4 teaspoon salt (optional -- I never bother). Salted
butter contains 1/8 teaspoon salt per stick (8 tablespoons).

BUTTERMargarine: Always substitute STICK butter with STICK Margarine 1 for
1, but the taste will not be the same. I prefer to use Country Morning
Stick Blend from Land O Lakes because it is half butter and half margarine.

BUTTERVegetable Oil: Stick butter or margarine can NOT be substituted
successfully with vegetable oil, or with any liquid oil or fat. (See Healthy
Baking).

BUTTER or MARGARINE Reduced-fat Spread will ruin your recipe. Spreads have
only about 25 percent fat content, while butter and margarine contain around
80% fat, a big difference that will greatly affect the recipe.

BUTTER or MARGARINESHORTENING
1/4 cup butter or margarine = 1/4 cup Crisco shortening + 1 1/2 teaspoons
water
1/3 cup butter or margarine = 1/3 cup Crisco shortening + 2 teaspoons
water
1/2 cup butter or margarine = 1/2 cup Crisco shortening + 1 Tablespoon
water
2/3 cup butter or margarine = 2/3 cup Crisco shortening + 4 teaspoons
water
3/4 cup butter or margarine = 3/4 cup Crisco shortening + 1 Tablespoon +
1 1/2 teaspoons water
1 cup butter or margarine = 1 cup Crisco shortening + 2 Tablespoons
water (from www.crisco.com).

VEGETABLE OIL Olive Oil (use extra-light): Some bakers have successfully
substituted vegetable oil with olive oil (one for one), but I do not
recommend it in basic baking; olive oil is heavier and imparts more of a
taste than vegetable oil. It works best in yeasted bread recipes.

Canola, Sunflower Oil, Vegetable and other liquid oils can be used one for
one, instead.

Peanut Oil = vegetable oil with a splash of sesame oil