Showing posts with label Science in baking. Show all posts
Showing posts with label Science in baking. Show all posts

7 November 2020

Pretzel dough flatbreads

 

It now seems a lifetime away that I lived in Germany. I moved away from there in 2007, so it has been a while indeed. I spent nearly ten years in Cologne, so of course I still miss many things from there. Today’s food is one of those things. There was, and still is, a bakery chain making these tasty flatbreads on a pretzel dough base. I would often get one as a snack on the go. That’s where my inspiration for these flatbreads comes from.

I made half of my flatbreads with an onion, garlic and Cheddar filling and the other half with bell peppers and Mozzarella. I also made sodium carbonate to make my basic pizza dough taste like pretzels. The dough is dipped in the sodium carbonate for a while before hand-stretching, filling and baking the flatbread. You can read all about this method in my previous Pretzel roll post.




Have a nice weekend!

Your VegHog

 

18 July 2013

Laugenbrötchen – Swabian pretzel rolls

This might be the earliest depiction of a pretzel. Hortus deliciarum from Alsace, 12th century.

My approaching holiday in Germany made me crave these pretzel rolls. I'm sure you'll know what pretzels taste like, but have you ever eaten a fresh roll with the same flavour? I must say that these are one of my favourite rolls and are such a tasty breakfast filled with just cheese or tomato, mozzarella and basil.


Normally lye is needed in order to accomplish the distinct pretzel taste, but instead of using lye I practiced some science and created sodium carbonate out of sodium hydrogen carbonate (bicarbonate of soda). Sodium carbonate is better to work with than lye and the end result is better than with sodium hydrogen carbonate. And please do not be afraid of what I'm about to describe. I'm the least scientific person ever when it comes to chemistry but I easily managed to do this. I just like the look of the formulas and my scientist friend checked their correctness.


Ingredients

600g flour
25g dry yeast
2tsp salt
400ml water
3tbsp sodium carbonate (to be made from sodium hydrogen carbonate, see below)
Sea salt flakes for sprinkling on the top

Method

Mix the flour, salt and dry yeast with lukewarm water. Add the water slowly as you might not need to whole 400ml. Knead to an even bread dough and let rest in a bowl covered with a tea towel for one hour. While the dough is rising there's time to prepare the sodium carbonate.

The formula of sodium hydrogen carbonate:

NaHCO3

The formula of sodium carbonate:

Na2CO3

The thermal decomposition of sodium hydrogen carbonate:

2NaHCO3 → Na2CO3 + H2O + CO2
                                                                                 heat

Place about 6 tablespoons of sodium hydrogen carbonate in an oven dish and heat at 150-180C for about 30-40 minutes. Mix it occasionally. This gives off a little water vapour and carbon dioxide as the sodium carbonate that we want is being made. Once it comes out of the oven dissolve three tablespoons of sodium carbonate into one liter of hot water.

Shape rolls of the dough and roll them in the sodium carbonate water, about one minute each. Make an x-cut across the rolls with a knife and sprinkle some sea salt flakes on the top. Place the rolls on a baking tray and bake at 220C for about 20-25 minutes.



Enjoy the baking and science!

Your VegHog