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Rye bread - and how to make your own sourdough

12/10/2016

9 Comments

 
FINALLY... the end of a busy semester - which means I have time to focus on what really matters: food!
For some time now I've wanted to write a post about rye bread and especially about how to make it at home using sourdough leaven. So here it is: everything you need to know about what makes sourdough rye so freaking great and exactly how to make it. I'll show you two delicious recipes I've managed to concoct in my flour-dusted kitchen: the Danish Rye Loaf (rugbrød) and the Finnish Sourdough Rye (hapanleipä). After reading this post you can have your starter up and running in five days, and have amazing bread on the sixth.
Picture
Finnish Sourdough Rye (Hapanleipä)
PictureMy late Finnish grandmother's hearth oven in Eastern Finland
But first, a disclaimer: I'm a little bit partial to the rye grain. I blame my Nordic roots. Yes, having having been born and raised in Finland has left lasting effects when it comes to my taste in certain foods, and rye bread is no exception.  Let me explain: growing up, my mother, when describing someone strong and stoic, would announce he or she “had rye in his wrists” (“ruista ranteessa”). A generation before her, my grandmother at her farmhouse in South Karelia would bake a fresh loaf from rye and potato flour in the hearth oven before supper (see image). I suppose if the baguette is symbolic of France then the rye loaf is symbolic of Northern Europe. Both tell a story. So consider this a rye story.

The sourdough hype

Today sourdough is riding a wave of popularity. You’ve seen it sitting on shelves of your cozy local bakery. You know people like it. You baulk at its price (“twice the price of a normal loaf!?”). And you half expect a round of applause every time someone utters the words “avocado on toasted sourdough.” But what the hell is sourdough?
Sourdough is really just a way to leaven bread based on the natural process of fermentation. Functionally, it serves the same purpose as a packet of Fleishmann’s yeast or jar of baking powder you'd pick up from the grocery store: it just makes dough rise. Bakers call the inside part of bread the “crumb” and if it wasn’t for leavens then we’d all be eating hard tack with precisely zero crumb. But not all leavening agents are made equal. In fact, I’m going to go as far as to say that sourdough is the best leaven of the lot - bar none. Bread leavened with sourdough is healthier and more delicious and doesn’t stale as fast as non-sourdough based bread. And what’s cool about rye is that to produce a decent loaf it’s essentially required to use a sourdough leaven. Oh, and sourdough leaven is free!

An unplanned trip to Copenhagen

PictureCopenhagen (and my cycling Swedish friends)
My love affair with rye was sparked during a trip to Copenhagen this summer. Booked on a whim, I found myself emerging from my hostel on a cold and windy June morning onto the streets of that wonderful city of beautiful humans on bicycles. While renting a bike I met a chatty group of Swedes and joined them at a nearby cafe for lunch. And it was in line at that cafe that I was confronted with something extraordinary: a dazzling array of open-faced rye sandwiches - smørrebrød. Bite-sized foodie rye sandwich concoctions with toppings like cold smoked salmon and watercress. Fantastic. Later, back at the hostel bar, I met a local and asked about what made the bread so good in Denmark. She laughed, and explained that rugbrød is a point of pride among the Danes. Music started up, some crazy Dane playing flamenco tunes on an acoustic guitar. People we dancing. Above the commotion I implored my new friend about rugbrød. “She’s got a boyfriend,” her friend was told me with a sideways glance. “I don’t care I just want to know about rugbrød!” I thought. She told me all about rye bread and about what special baking mold I should buy and where to buy it and then we even danced for a while to that crazy Danish flamenco music. The next morning before catching my flight to Helsinki I went straight to the store to buy my special new baking mold: the EVA rugbrød form. I got some odd looks walking around the airport with that thing. But it was worth it! 

My first day in Helsinki I started my sourdough starter and soon I was making rugbrød. Check out the recipe here.
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Bakery in Copenhagen. See the rugbrød loaves in the centre?

How to make a rye sourdough starter

All it takes to create a healthy and robust sourdough starter is some rye flour and water - that’s it. Oh, and one last thing: time.
But despite its simplicity there’s a lot of mythology surrounding the sourdough starter. Some just plain crazy stuff. My Colombian friend said his grandmother had a living starter for a whole generation - with a depth of flavour unparalleled. Legendary baker and surfer Chad Robertson admitted to obsessing over his first sourdough starter, going so far as to take it to the movie theatres with him one night for supervision. And even respected authors fall for the mythology of sourdough. Michael Pollan, famous foodie journalist and creator of the popular Netflix series Cooked, even wrote in his seminal whole foods anthem Omnivore's Dilemma that,“The Bay Area has a reputation for its sourdough bread, so I figured the air outside my house would be an excellent hunting ground for wild yeast." Come on, Pollan. First of all, you don’t need to “hunt” for wild yeast. It’s already in the flour whether you’re looking for it or not and floating around all over your kitchen. And secondly, while it’s true that San Francisco has some damn good sourdough, it’s also the case that many other places do, too. (Although scientists did go as far as naming a particular yeast strain commonly found in sourdough, Lactobacillus sanfranciscensis, after the city… even though it has been found in bakeries across the world.)
Although, for what it’s worth I shouldn’t discount the element of magic in creating a sourdough starter. You’ll witness for yourself if you try it - the seemingly inert mixture of flour and water starts to bubble and froth… and comes alive! ​
Day 1: Combine 80g of organic whole rye flour and 80g lukewarm water in a glass jar. Mix with your hands until it forms a stodgy paste. Cover with plastic wrap and set aside for 24 hours at room temperature.
Day 2: Your starter should’ve begun to bubble. Take a whiff. Should smell clean, floral, slightly sour. Beautiful! But don’t get too attached: toss out all but 80g of this mixture. Now combine this with another 80g of flour and 80g of lukewarm water. Mix it with your hands till it forms a stodgy paste, just like before. Cover and set aside for 24 hours at room temperature.
Day 3-7: Repeat! Every day you need to refresh your starter. What’s happening is the naturally occurring yeasts are feasting on the sugars present. This is called fermentation. But the active bacteria will soon starve if you don’t give them more flour to eat.
Picture
Day 1: No activity
Picture
Day 2 and onwards: sourdough bacterial culture activity is visible with bubbles
Tips:
  • A sourdough likes to live in a glass jar above the fridge.
  • Temperature and humidity are important. Ideally you want warm and humid air. But not too warm as this might result in overactivity of the culture (see image of my starter bubbling over in the sweltering Houston heat). In Newfoundland I’ve found that during cold weather the activity can be slowed down considerably. Extending refresh times to 36 hours instead of 24 has worked well for me.
  • Don’t pour it down the sink. The mixture doesn’t dissolve well in water and can clog up your sink. Instead, toss it into the garbage.
  • Especially in the first week, check for mould or off-smells. This is rare, but sometimes you’ll catch some pretty funky bacteria from the air.
  • Show off your starter to your friends! It’s a unique bacterial culture. No single sourdough is the same or ever will be. Your friends will be impressed.
Picture
A healthy rye sourdough starter in my St. John's kitchen
Picture
An over-active wheat sourdough culture in hot hot Houston...

Why sourdough?

Compared to bread leavened with commercial yeast or baking powder, sourdough is healthier. It’s easier to digest, too, and has more flavour; plus it will not stale nearly as quickly, nor will it spoil due to mould nearly as easily. Oh, and it yields comparatively more volume from the same batch of dough AND has superior texture in the finished loaf, too. ​And did I mention it's free?
Don’t believe me? I consulted the Oxford Handbook of Food Fermentations to fact-check these claims. And it stands up to them. The book features authoritative accounts from many experts on a diversity of fermentation products. The volume on bread making was written by a group from the School of Food and Nutritional Sciences at the University College Cork in Ireland and includes a list of over a hundred academic references. I won’t go into scientific details but here’s a little summary of their main points which back up claims I’ve made in my article:

  • Sourdough is a mixture of flour and water fermented with Lactic Acid Bacteria (LAB) and yeasts, which determines its characteristics in terms of acid production, aroma, and leavening.
  • Sourdough is a unique food ecosystem. It hosts LAB communities specific for each sourdough.
  • In general, sourdough can improve the overall quality of bread in terms of volume, texture, flavour, nutritional value, and shelf life.
  • Acidification induced by LAB is generally considered a prerequisite for baking rye bread.
  • Wheat and rye sourdough development is mainly driven by the fermentation parameters and by the bakery environment; the role played by the flour and its existing microorganisms in establishing the sourdough culture is a still a matter of scientific discussion .
  • Sourdough can enhance the healthy attributes of bread, in terms of mineral bioavailability, starch digestibility, and concentration of bioactive compounds. ​
Happy baking!
Picture
Rugbrød, made with whole rye kernels
Picture
Finnish sourdough rye (hapanleipä)
9 Comments
Leena-Mari
12/11/2016 11:39:39 am

Erittäin hyvä kertomus ruisleivästä, ja mikä kaunis leipä!

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Colleen Wadman
12/12/2016 04:45:52 pm

Erik you are a fabulous writer! I so enjoyed reading your blog. I can't wait to taste the sourdough bread at Veitchmas!

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petra
12/16/2016 04:21:05 am

mmh, one thing only is new to me: that you say 'through out' all but 80g. I have never heard this before, but then again - last time i got my 'hands' on making sourdough was about 25 years ago. my memory may be failing. However i don't like the throwing-out - it means 6X throwing out good and expensive organic flour (i buy the Anita brand, darn expensive!) - goes against my grains of throwing out food stuff. Would maybe birds eat it at least?

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petra
12/16/2016 08:31:27 am

meant to say 'THROW out' ;)

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Erik
12/17/2016 05:08:52 am

Hey Petra! Yes, that's correct, you need to "refresh" the sourdough starter once every day or so, and this involves throwing out more than half the existing sourdough every day. It might seem like a waste, but it's not a large quantity of flour, and it's what it takes to keep a bacteria culture alive. It's my understanding that if you don't throw out a portion every time you refresh the starter, you end up with an over-active culture, with too much active bacteria and not enough fresh food - and so the culture will risk dying. BUT the good news is you can slow the rate of refreshing by putting the culture in the fridge (less waste) or you can even freeze the culture (indefinitely) and then get it going again when it has thawed.

Craig
1/30/2017 09:44:43 am

Awesome article Erik! Since moving to Svalbard I have started to have a growing interest in baking my own bread. I have been using dry yeast but after reading your article I think I'm going to have to try making my own starter! Out of curiosity have you ever played around with different flours for your starter?

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Burnt Chef
2/1/2017 03:54:41 am

Craig, thanks for the kind words and for getting in touch. So you want to bake your own sourdough bread? That's awesome! I couldn't recommend it more. Yes, I have played around with different starters from several types of flour. Funny that you mention this now, because just yesterday I started a new starter with a 50/50 mix of whole wheat flour and medium-extraction "bread' flour based on the Tartine method by baker Chad Robertson. But I've also used starters entirely from all-purpose flour based on Thomas Keller's Bouchon Bakery recipe. The latter has worked well for me for years. And of course I've got my own rye starter. So to answer your question I've used wheat and rye, both in various extractions (how much it is processed - 100% being whole) and various hydrations (how much % by weight is water), and all this works fine. But there is definitely lots of room for variety for your sourdough culture!
PS: for inspiration on types of grain to use in your bread you should check out the Svalbard Global Seed Bank.

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Monica
11/3/2017 08:30:59 am

Hi Erik,
I am definately going to have a go at your sour dough recepie, differs from what I have tried before. I have killed more sour doughs than I remember but being stubborn, I hate to give up :-). Trying one rye and one with all purpose flour. Love your blogg!!

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cheap reliable essay writing service link
8/5/2019 12:03:56 am

I was wrong at the very beginning. I always thought coming up with your own sourdough is pretty difficult that's why I never had the guts to try it before. But after reading your article; your instructions on how to achieve a lovely and tasty sourdough, I realized that I can come up with it through my own effort. Finnish Sourdough Rye (Hapanleipä) might look really simply, but its taste is something that all of us will never forget!

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    Author

    I'm Erik, the Burnt Chef. I'm a Finnish-born Newfoundlander living in Norway. I have a passion for cooking and a deep fascination for the culinary history of the North.  Simplicity guides my cooking. Time, place, and history guide my storytelling. This is my personal blog about food. 

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