Stop for Science: Soft Pretzel Time! (2024)

On our way back from Prague last summer, Joe and I had a layover in the Frankfurt airport. It wasn’t very long, and knew we’d have to board pretty quickly after going through customs. As we stood in the lengthy line to board the plane, a smell caught my nose.

There are a few foods that I can sniff out like a bloodhound. One of them is quite possibly the only food I won’t pass up (if it’s fresh!): Soft pretzels. Yes, we all know by now that the carbo-queen loves her bread, but pretzels are special. Their taut, thin outer crust, mahogany brown color, coarse bits of salt, slight malty flavor, and soft pillow-y middle make them a special kind of snack. And of course, warm ones are best. Just about every pretzel I ate while we toured Berlin (and it was probably a two digit number) met these criteria. All that had to happen was for me to see a sign that read ‘laugenbrezel’ and Joe nearly lost me on the street as I followed my moth-like trance toward pretzel glory.

So when I saw a lone man in a kiosk flipping ropes of dough, my eyes widened and Joe got a worried look on his face. Inwardly whimpering that I might never have such delicious and perfect pretzels again…well…

“I’ll be right back.”

The line was maybe 3 or 4 people long, and unlike American mall pretzel vendors there is only one “flavor” to choose. It moved swiftly, but I could see Joe worriedly moving toward the front of the boarding queue. Three hot soft pretzels in a paper bag later, I sprinted through the airport a la the family from “Home Alone,” and onto the plane for the final leg of our trip home.

But as delicious foods are, they were gone all too soon. Needless to say, I declined dinner on the flight.

Every time since that I found myself in a bakery, my eyes scanned longingly for that characteristic shape. I won’t say that I got snobby about it, but I was honestly disappointed most times that I found them around here. Either they were simply bread rolled into a pretzel shape, or heavily glazed in butter, or had a funny aftertaste, or were sadly stale and dry. Even most street vendors transitioned to using the pre-frozen variety…which just never live up to how nice they look.

So, it was time to bake. First, I had to learn what made pretzels different from other breads. It turns out that one simple step makes all the difference. And it might scare you. A little bit.

Lye. Yes, drain cleaning, soap-making lye. Before you wonder, yes a food-grade version is available, and no you should not use that bottle of drain cleaner from the hardware store. Lye (sodium hydroxide for the scientifically inclined) is an alkali solution that changes the pH of the dough in such a way that it helps the crust gelatinize, achieve the dark color, and even makes the salt stick. It’s also responsible for the distinct pretzel flavor and texture of the crust.

Many home pretzel bakers forgo using lye because it requires some extra precaution due to its caustic nature. Instead, they use a solution of water and baking soda. It produces a similar result, but not the same flavor. And unfortunately, after they cool, the pretzels develop a weird metallic taste. I can’t (or shouldn’t) eat an entire batch of pretzels while they’re still warm, so I’d rather be able to keep them around longer and get that authentic flavor. One that will remind me forever of beautiful days walking around Berlin with the love of my life. What could be better?

Bavarian-style Soft Pretzels

  • 1 tbsp. active dry yeast
  • 4 1/4 cups bread flour
  • 1 and 1/4 cups warm water, divided
  • 2 tsp. sugar 2 tsp. salt
  • 2 ½ tbsp. unsalted butter
  • 1 oz. food-grade lye
  • Coarse sea salt or pretzel salt
  • Plastic gloves, safety goggles, vinegar, and nonreactive pans and utensils.

Proof the yeast by dissolving it in ¼ cup warm water, along with 2 tsp. sugar. Let the mixture sit until foamy, about 5 minutes.

In the bowl of a stand mixer, combine the bread flour and salt, then add the yeast mixture and full cup of warm water. Once the dough comes together, knead it for 5 minutes with the dough hook or by hand. The dough will be very stiff.

Allow it to rest for 5 minutes, and then start kneading in the butter. Knead for 5 minutes, or until the butter is completely incorporated and the dough is very smooth and elastic.

Roll the dough into a ball and place it in a lightly greased bowl. Toss to coat the dough ball in oil, and then cover the bowl and allow the dough to rise for an hour, or until doubled in side. Degas and divide the dough into approximately eighteen 2 oz. pieces.

Roll each piece into a foot long rope. Rest for 2-3 minutes and then shape the pretzels. Take a rope of dough, roll it out another 6 inches and then twist into a pretzel shape. Glue the “arms” down with a dab of water.

Set the pretzels on two baking sheets lined with parchment paper and refrigerate for one hour. The surface will dry out and a skin will form on top: this is a good thing!

Put on plastic gloves and safety goggles. I wear a surgical mask too, but mostly because I’m short and my face is very close to the pot.

Wipe the surface of your work table with some white vinegar, and keep a small glass of the vinegar nearby. It’s unlikely that there will be any bad reaction, but if there are vinegar will neutralize the reaction almost instantly.

To make the lye solution, measure one quart of cool water into a nonreactive saucepan. Slowly add one ounce of food grade lye and stir gently to dissolve. ALWAYS add the lye to the water and not the water to the lye. Doing it the other way around may cause the lye to react and combust.

Dip each pretzel in the lye solution for 30 seconds and then place back on the parchment-lined baking sheet using a slotted spoon. Sprinkle the pretzels with coarse salt and then let them rest for 20 minutes. Preheat the oven to 375 degrees F.

Wipe everything that may have come into contact with lye with a vinegar soaked rag and then wash with warm soap and water. This may be overkill, but if you have kids or pets around, better safe than sorry I say.

Bake the pretzels for 20-25 minutes or until they are a deep golden-brown. Eat and be happy. Is it worth the hassle? You be the judge:

Stop for Science: Soft Pretzel Time! (17)It is said that an Italian monk invented the pretzel in the 1600s, and that the crossed “arms” across the middle represented folded hands. He supposedly gave this to children who learned their prayers faithfully, but as with much of food lore, there isn’t a whole lot of evidence to back that up. This monk referred to the bread rolls as “pretiola,” which translates to “little rewards.”

I’d say that’s about right. This batch went off to the Arlington County Fair to be entered in this year’s baking competition. I certainly hope the judges find them rewarding.

Ciao for now,

Neen

Stop for Science: Soft Pretzel Time! (2024)

FAQs

What is the science behind the pretzel? ›

In the case of the pretzel, the Maillard reaction is responsible for the deep brown crust, crunchy arms and distinctive taste. At its most basic, the Maillard process is a heat-activated reaction between small sugars and amino acids.

How long does a soft pretzel last? ›

Store your leftover soft pretzels in an airtight container for up to two days. Reheat in the oven, not the microwave, for the best results.

What is the story behind the soft pretzel? ›

According to some scholars and various sources, the most popular story is that the pretzel was made in 1610 AD by an Italian monk when he decided to make a special treat to help motivate his students to keep on learning.

What is the secret ingredient which makes a pretzel taste like a pretzel? ›

The answer lies in a brief dip in an alkaline water bath before baking. This bath essentially gelatinizes the outside of the pretzel, preventing it from fully “springing” during baking (as bread does) and giving pretzels their signature chewy crust. It also gives them their unique and indelible “pretzel” flavor.

What chemical is used in pretzels? ›

Lye is primarily used to make pretzels, and it's the reason for their unmistakable shiny, mahogany color. To prepare, shaped pretzels are dipped in a lye bath, then baked in the oven.

How long to ride the pretzel on Zwift? ›

With 20+ people coming over in ~4 hours I needed to hop on the bike quickly so I could be done and showered before they arrived. I guessed that it would take me around 3 hours to ride the 45 miles with 4400' of climb. Silly, silly Monica! The Pretzel first takes you up the Epic KOM.

What state eats the most pretzels? ›

Over time, the pretzel became a staple and an integral part of Pennsylvania's culture and economy. The state is now known as the pretzel capital of the world, with Pennsylvanians consuming a whopping 12 times more pretzels than the national average.

What is the meaning behind the pretzel? ›

During the 16th century, pretzels were often given as rewards to children who learned their prayers, further strengthening the connection between pretzels and religious customs. The pretzel's shape was also associated with a range of symbolic meanings, including arms folded in prayer or a child's posture of humility.

What does the pretzel mean Christianity? ›

He named his creation “pretiola,” Latin for “l*ttle reward.” The three holes represented the Holy Trinity. In the centuries following, the pretzel made its way into history books and European culture. By 1440 the pretzel's form was a symbol of good luck, long life and prosperity.

Are pretzels healthy? ›

Pretzels may be better than some fatty chips, but four out of five nutrition experts surveyed by Time say if you're trying to eat healthy, pretzels shouldn't be your go-to snack. Although pretzels are low-fat, they are also pretty paltry on the protein and fiber front, and they can be quite high in sodium and carbs.

What's the difference between a pretzel and a soft pretzel? ›

Soft pretzels are large and have a chewy texture. They're usually served individually and are commonly sold at concession stands, restaurants, and bakeries. Meanwhile, hard pretzels are small and crunchy and can be eaten by the handful, depending on their shape.

Why do pretzels make you thirsty? ›

The main reason why you get thirsty after eating pretzels is because of a little thing called osmotic thirst. It sounds scary, but it really isn't. Osmotic balance refers to the balance between the amount of water in your cells and the amount of water outside your cells.

Why is the pretzel in that shape? ›

The legend of the pretzel

The Catholic Church claims that a monk in Northern Italy created pretzels by using left-over dough that was originally made for Lent. He created the signature pretzel shape because it was meant to symbolize a child praying with his arms folded across his chest.

What is the story behind the pretzels for Lent? ›

There was a time when pretzels were eaten only during Lent. They appeared each year on Ash Wednesday and disappeared on Good Friday. The tradition goes back to the fifth century. Apparently, there is even a manuscript in the Vatican Library dating from that period which shows a Lenten pretzel.

What is the spiritual meaning of the pretzel? ›

They came to be seen as a symbol of good luck, prosperity, and spiritual fulfillment. The three holes in the traditional pretzel shape have also taken on religious meaning over the years. These are sometimes seen as being representative of the Holy Trinity: the Father, the Son, and the Holy Spirit.

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