Great pie dough is easy for some and a quest for others. Flour, salt, butter, water — how can it be so challenging? Sometimes, recipes call for one extra ingredient: a splash of vinegar in the cold water that brings the pie dough together.
What does that vinegar do? The most common answer — that it affects gluten development — isn't actually that useful. If you had a mass spectrometer at home, you could measure the teensy difference vinegar makes in the tensile strength of gluten strands in the dough, which in theory makes it a bit more tender.
But there are two much more important perks to using vinegar: it provides a little insurance against overworking the dough. And, that splash of vinegar will keep your dough from oxidizing and turning gray.
To watch the oxidation process play out, I made twobatches of ourAll-Butter Pie Crustand mixed 1 tablespoon of vinegar into the ice water of the second batch.
Here's the same recipe after three days. The water-only version has become noticeably grayer. It was also a bit more slack to work with when rolled out.
What happens if your dough is gray and oxidized, and you bake it anyway? Good news. It'll be fine. While the oxidized dough was a little floppier to work withand didn't hold the pattern of the pie top cutters, the look and flavor of the baked dough were pretty much the same.
In the end, if you prepped your dough without vinegar, forgot about it, andworry you'll have to start over, fear not. Use your gray dough and give it a little egg wash on top before baking.
Pie dough best practices
The biggest determining factor in the quality of your pie crust is the technique used to make it. Vinegar, buttermilk, lemon juice, and vodka all change the interaction of the liquid and gluten in the dough. But the difference between a dough with acid in it and one without (when made with the same technique) is infinitesimal. In other words,no ingredient can cure poor execution.
So remember the essential rules of pie baking:
Keep your fat cold, and leave half of it in larger chunks, bigger than you think they should be.
Addliquid, but not too much.
Fold the dough to bring it together, and don't be anxious if it's a little crumbly, as long as it feels damp.
This is where overworking is a risk; as long as the dough is mostly holding together, you don't need to spend a lot of time kneading it.
Chill in disks with round, smooth edges. If you do, you'll get smooth edges when you roll it out.
When it comes to pie dough, practice makes perfect. The most essential pastry ingredient is confidence. But if you're a busy baker and aren't sure when you'll be making the leap from dough to oven, a little splash of vinegar (or lemon juice) in your recipe is a good idea.
If you're a visual learner, check out the video tutorials in our Pie Baking Guide.
Our thanks to Anne Mientka for the photos in this post.
Why do some pie crust recipes call for vinegar? Vinegar can affect the gluten development in dough. Gluten gives dough structure, but too much gluten development can make dough tough. Acid can hinder gluten development; so, a bit of vinegar (or lemon juice) can make pie dough slightly more tender.
1. Use Very Cold Butter or Fat. Butter, shortening, lard, or suet—whatever fat the recipe calls for should be well-chilled and cut into small pieces to start with for the flakiest crust in the end. The fat in a pie crust must maintain some of its integrity in the dough to make the crust truly flaky.
The acid in the apple cider vinegar tenderizes the dough by slowing the gluten production in the dough. This prevents it from getting tough and elastic like bread dough. Love me tender. If you've ever bitten into a slice of pie with a tough crust, you know the value in a tender, flaky pie crust.
Vinegar is good for lowering blood glucose levels, helping with weight loss and boosting skin health. It also has antibacterial properties. Today, more and more people are discovering its health benefits and using it as a go-to remedy for everything from minor ailments to chronic diseases.
Which rack you use in the oven can help ensure a crisp crust. Baking the pie on a lower rack will concentrate heat on the bottom of the pie and help the crust crisp.
Crust dust is a 1:1 mixture of flour and granulated sugar. When baking a pie, especially a fruit pie, a couple of teaspoons of crust dust sprinkled into the bottom of the crust will help prevent the crust from becoming saturated with juicy filling as it bakes.
As important as not overmixing is staying chilled, literally!! That means keeping all elements cold— your counter, ingredients, hands, heart (just kidding!). No, but seriously, cut up your butter into little cubes and chill them before you incorporate them into the flour.
Vinegar is a surprisingly common ingredient in baked goods, considering that it has such a sharp flavor. But as an acid, vinegar is often included in cake and cookie batters to react with baking soda and start the chemical reaction needed to produce carbon dioxide and give those batters a lift as they bake.
Mixing baking soda (sodium bicarbonate) and vinegar (acetic acid) causes a chemical reaction that produces a salt (sodium acetate) and water, as well as carbon dioxide gas. In this demonstration, baking soda is placed in a balloon that is attached to a flask holding vinegar.
White vinegar, also known as distilled vinegar or spirit vinegar, is made by fermenting grain alcohol (ethanol) which then turns into acetic acid. Water is then added to the vinegar, so white vinegar is made of five to ten percent acetic acid and ninety to ninety-five percent water.
The acidic properties of vinegar inhibit gluten, some will say. This theory proposes that once the water and flour are combined, gluten starts forming, causing the dough to grow tough. Adding an acid, the theory goes, stops the gluten in its tracks and rescues the crust from toughness.
I look at it like buttermilk (which often times I never actually have so I make my own using vinegar) in a recipe. King Arthur Flour says the purpose of the vinegar is to temper the sweetness of the sugar and it also reacts with the baking soda to allow the cookies to rise a bit more in the oven.
Depending on the variety, vinegar can bring a sour, tangy, sweet, mild, malty, woody or even buttery flavor to your dish. It can also be used to color or discolor foods. Because of its unique ability to break down proteins, vinegar is also used as a marinade to help tenderize meats and veggies.
Introduction: My name is Wyatt Volkman LLD, I am a handsome, rich, comfortable, lively, zealous, graceful, gifted person who loves writing and wants to share my knowledge and understanding with you.
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