10/16/2026
Brad and I conducted a soft pretzel experiment tonight... For the ❤️ of science!
Traditional pretzels are dipped in a diluted lye solution but most home bakers use baking soda for safety (lye is caustic and needs proper handling). If you're wondering why you dip pretzels in lye or baking soda, it's all about the flavor and the color that you get from the alkaline pH in both. Lye has a pH of 13-14, and baking soda, 8.3-8.4.
We typically use baking soda for our recipe. Recently, we came across some baker's research that had us interested. The science is taking regular 'ol baking soda and baking it in the oven until it is 2/3 of its original weight. This converts the baking soda (sodium bicarbonate) to sodium carbonate. Here's the nomenclature if you're interested NaHCO3 ➡️ Na2CO3 😊 This conversion raises the pH to 11.5. A higher pH but not as much as lye; keeping it in the safer zone. This process is supposed to give better color and more of a lye dipped taste.
Earlier this week, we baked some baking soda. Tonight, we put it to the test! In the pictures below you'll see 6 pretzels that were dipped in our typical baking soda bath, 3 that were dipped in baked baking soda full strength and 3 that were dipped in baked baking soda then rinsed (we also read that rinsing can avoid a soapy flavor).
The results were not at all what we were expecting! The darker pretzels were dipped in the baking soda bath (how we typically do it). They actually got a little too dark, waiting for the others to catch up. The medium brown colored pretzels were dipped in the baked baking soda solution and the lightest, dipped in the baked baking soda solution then rinsed. The biggest surprise of all was the taste. There was no significant taste difference between them.
Moral of the experiment for us... If it ain't broke, don't fix it! 😆