Its October, that means its Oktoberfest, and that means everyone is German (apparently). What this amounts to for me is pretzels, which is great, because I love pretzels.
Actually what I love is dipping things in lye. Lye is, for those of you that don’t know, sodium hydroxide. It’s a caustic base. On the ph scale it’s the opposite of acids. It’s used to make soap, and clean drains (it’s Drano).
It is also used to make pretzels. You make a solution of 3% and dip the risen pretzel in that before you salt and bake. I don’t know the exact science, but I assume it changes the ph of the skin of the dough, and starts to act on the starch to cause it to set (if any one knows what’s really happening, please fill me in).
The whole process to making pretzels is not hard; it just has more steps than normal. First you mix the dough, and then shape it immediately. Then you let the shaped dough rise ¾ of the way or so. Then pop them in the freezer to chill so they can be dipped more easily. Once they are ready you dip them in the lye solution (gloves, goggles, rain slicker, what ever you need to keep it off your skin), let them drain for a second, then put them on sheet pans, and top with salt. I always like to let them dry for a bit (10 min) because I think it helps the crust color evenly, but I have also put them straight into the oven.
My formula comes from Tim Healea at Little t American baker, but I tweaked it (he would expect me to tweak it, he expects me to mess with everything). The exact formula doesn’t really matter, except that it’s stiff dough, with a sugar (I like malt syrup, other people use white sugar), with just a bit of fat to make it easier to shape right out of the mixer. Most bagel formulas would work.
The main difference between Tim and I is that I use some rye flour, and a bit of levain. I like them for depth of flavor, but also because they help keep the baked pretzel from going stale too quickly. It doesn’t take much; I’m at 15% for both.
Now the real problem here is to find lye. Thanks to the head chef, I was pointed towards Chinatown. Lye solution is used in some Chinese noodles for color, and I was able to find a sodium carbonate, potassium carbonate blend. Neither of these things are sodium hydroxide. They are both base, but not as strong. It works, but…
98% sodium hydroxide





