This is a delicious full-flavoured bread with a chewy crumb and thick crust made without added yeast. Wild yeasts in the flour multiply to raise the dough and naturally-occurring beneficial lactic acid bacteria (which produce lactic, acetic and other acids) develop to give the bread its tangy flavour and make it more digestible.
The amounts given in the start-up section of this recipe may seem a bit over-precise, but beginning with relatively small quantities means that you don’t need to throw any of your leaven away (as is sometimes recommended by less waste-conscious methods).Digital scales that are sensitive to one gram are a great help. But absolute precision is not necessary.
Starting a Wheat Sourdough from Scratch
If you don’t already have a sourdough starter, you can get some from Bread Matters or from a baking friend. It’s also easy to make your own:
Take 40 grams of wholemeal flour and 40 ml of warm water, mix them to a sloppy paste and put in a lidded plastic tub in a warm place (as near 30°C as you can manage). Leave for 24 hours and then add another 40 g of flour and 40 ml of water. Stir well and return to the warm place. Repeat on Day 3. On Day 4 add 120 g of white flour and 60 ml of warm water. On Day 5 you should have a nicely fermenting, slightly fruit/acidic-smelling starter.
Using a Sourdough to Make Bread
To make one large or two small loaves
Making a ‘Production Leaven’ (a process known as ‘refreshment’)
160 g original leaven (i.e. some of the starter you have just made or an old one from the fridge)*
200 g flour (75/25 white/wholemeal, or as you prefer)
120 ml warm water (35°C)
480 g total ‘production leaven’
Mix to a dough and leave in a warm place for 4 hours or in a cool place for 12 hours. Then use this leaven to make your dough.
* If you are making the exact quantities in this recipe, you will have about 240 g of your original leaven left. This goes into a sealed pot in the fridge to wait for the next time you are making bread.
Making the Final Dough
300 g refreshed ‘production leaven’ from Stage 1 (put the remaining 180 g or so in your leaven pot in the fridge)
400 g flour (75/25 white/wholemeal, or as you prefer)
300 ml warm water (35°C)
8 g sea salt
1008 g total ‘final dough’
Make a fairly soft dough. Knead until smooth and elastic. Cut into the desired size, mould, into a round, dip in flour (brown rice flour is best) and place in a floured proving basket (banneton) or a bowl lined with a floured linen cloth. Cover with a polythene bag and leave to prove in a warm place for up to 5 hours, until the dough has roughly doubled in volume. Turn out onto a baking sheet lined with silicone paper. Slash the dough with a sharp knife or razor blade to make the pattern of your choice.
Bake in a fairly hot oven (230°C dropping to 210°C after ten minutes) to develop a good crust.
Unused leaven may be stored in the fridge for weeks or months, or it may be frozen. To revive it, defrost it thoroughly and do a preliminary refreshment as described in ‘Stage 2 – Making a Production Leaven’, but take care to work out how much you will need to make bread with at the dough stage and adjust the quantities back from there.