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Weep-no-more lemon meringue pie.

"Why, oh why, does my lemon pie always weep?" writes Nadia Niles from Los Angeles. Or have a saggy meringue? Or fall apart when cut? These woes, and more, are frequently sung in chorus for this all-time favorite dessert.

And, after making this pie for days on end - to weed out fact from fiction - my sympathy bordered on self-pity. But persistence prevailed, and here are the secrets for success.

WHY DOES THE PIE FILLING GET WATERY?

For a lemon filling that's glossy and translucent, and firm enough to cut yet melts in your mouth, cornstarch is the thickener of choice. It's also a risky one because heat and acid (in the lemon juice) can destroy cornstarch's ability to thicken or stay thick.

Happily, the most foolproof way to make a perfect lemon filling is also the easiest. Just dump in the ingredients - in a specific order, with a combination of cold, then hot water - and cook them together. As the starch granules swell with the heating liquid and begin to form a thickening network, the sugar and egg yolk proteins join forces, like suits of armor, to coat and protect the starch at its vulnerable bonding points from the effects of heat and acid.

WHY SHOULD THE FILLING BE HOT WHEN YOU TOP IT WITH THE MERINGUE?

Steam billowing from a hot filling quickly passes through the baking meringue instead of lingering at the filling-meringue interface. However, some of the steam will collect near the surface of the meringue. As the meringue cools, it contracts (shrinks) slightly - just enough, after a few hours, to pop this moisture onto the surface in tiny golden brown droplets, or beads. The beads form faster if the weather is humid or if the pie is chilled. A tiny bit of cornstarch (such as in the recipe at right) whipped with the sugar into the meringue traps some of this moisture and reduces beading.

If the meringue is swirled onto a cool filling and baked, steam in the reheating filling just reaches the meringue. As the pie cools, the steam condenses to form the sweet weeping (sometimes a pool) under the meringue. And when the pie is cut, the meringue is inclined to slip off the wedges.

WHY DOES MERINGUE SHRINK?

As egg whites are beaten, they stretch and trap air bubbles. The size and strength of the bubbles determine the durability of the meringue. Small, even bubbles are more lasting than big, uneven ones.

An acid, such as cream of tartar, makes egg-white bubbles stronger. Add it before beating the whites into a coarse foam. To further strengthen the protein in the whites and force the bubbles to break into firmer, tiny ones, gradually beat in the sugar. When the foamy mass is glossy and holds distinct peaks, the bubbles are still flexible enough to swell when heating air expands in them as the meringue bakes. If sugar is added before a coarse foam is established, the whites get too stretchy to make a stiff foam. If you add the sugar too fast, the granules won't dissolve and the bubbles will be uneven. If you overbeat the whites, the meringue loses its gloss and the bubbles are stretched to their maximum; when heated, they pop and drain liquid. In underbeaten egg whites, the insufficiently developed bubbles break and drain.

However, even perfectly whipped meringues are relatively short-lived (unlike hard meringues, which are made with twice as much sugar and linger forever). Heat firms the pie meringue, and one that is baked longer at a lower temperature will hold up better than one baked briefly at a high temperature. As the meringue cools, the air in the bubbles contracts and causes slight shrinkage. Eventually, the bubbles sag, moisture drains from them, and the mixture gets gummy and chewy.

The following recipe solves all the problems of freshly made pies.

Foolproof Lemon Meringue Pie

Prep and cook time.' About 1 hour, plus 3 hours cooling time

Notes: Flavor and texture are best if pie is served within 24 hours.

Makes: 8 servings

1 3/4 cups sugar 6 tablespoons plus 2 teaspoons cornstarch 1/8 teaspoon salt 1 tablespoon grated lemon peel 1/2 cup lemon juice 4 large eggs, separated 1 tablespoon butter or margarine Baked 9-inch pie crust 1/4 teaspoon cream of tartar

1. In a 2- to 3-quart pan, mix 1 1/4 cups sugar with 6 tablespoons cornstarch and salt. Whisk in 1/2 cup cold water, lemon peel, and lemon juice, blending thoroughly. Whisk in the egg yolks. Add the butter and whisk in 1 1/2 cups boiling water.

2. Set pan over medium-high heat and stir with a flexible spatula until mixture boils, about 7 minutes. Reduce heat to medium and stir filling 1 minute more.

3. Pour filling into pie crust.

4. In a small bowl, mix the remaining 1/2 cup sugar with the remaining 2 teaspoons cornstarch.

5. In a deep bowl, beat egg whites and cream of tartar with a mixer on high speed (use whisk attachment if available) until very foamy and no liquid whites remain in bottom of bowl. Continue to beat at high speed and gradually add the sugar. starch mixture, 1 tablespoon at a time. Then beat until whites hold stiff, glossy peaks.

6. Spoon meringue onto hot pie filling. With a spatula, swirl meringue to cover filling completely, touching the rim of the pie shell.

7. Bake in a 325 [degrees] oven until meringue is browned, about 25 minutes. Set pie on rack until cool, about 3 hours. Serve, or invert a large bowl over pie (take care not to touch meringue) and chill up to 1 day.

Per serving: 367 cal., 29% (108 cal.) from fat; 4.7 g protein; 12 g fat (3.6 g sat.); 62 g carbo (0.4 g fiber); 207 mg sodium; 110 mg chol.

MORE QUESTIONS?

We would like to know what kitchen mysteries you're curious about. Send your questions to Why?, Sunset Magazine, 80 Willow Rd., Menlo Park, CA 94025; send e-mail (including full name and street address) to why@sunsetpub.com. With the help of George K. York, extension food technologist at UC Davis, Sunset food editors will try to find solutions, then answer questions in the magazine.
COPYRIGHT 1997 Sunset Publishing Corp.
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 1997 Gale, Cengage Learning. All rights reserved.

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Title Annotation:includes recipes
Author:Anusasananan, Linda Lau
Publication:Sunset
Date:May 1, 1997
Words:1048
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