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walnut tartine bread

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Tartine walnut bread

Squirrels have dug holes in my lawn, the sure sign that winter is coming. I don’t blame them much – they manage just about to scuff the grass and topsoil, puny diggers they are. It’s badgers I’m much more concerned about, mindless, disinterested vandals bulldozing all in their path. The other week we truly stepped on a war path with one (or many?) of the brutes – he would dig up our back gate path, we would try to put it back together. The J-powder selected from the arsenal of weapons finally did the trick – or, as I suspect the badger got bored.

Back to squirrels – it puzzles me a little what they collect: no hazelnut shrubs in the vicinity, let alone walnut trees. There are some oaks further up the hill, but that’s a bit of a way off, especially for a very little furry animal. But the most intriguing is how they can ever remember where their acorns are buried, come winter?

Tartine sourdough with walnuts

Funny things, squirrels. In my last London job my office came out to a big old park. A squirrel – at least I like to think it was always the same one – would run onto the outside window ledge and peek into my office stood up on the hind paws. I never had any nuts with me to give him, and it turned out he didn’t like smarties.

He would probably have liked this bread.

  • INGREDIENTS
  • For the leaven:
  • 1 tbsp. sourdough Tartine starter
  • 200g warm water
  • 100g white bread flour
  • 100g wholemeal flour
  • For the main dough:
  • 125g Tartine sourdough leaven
  • 400g white bread flour
  • 100g wholemeal flour
  • 350g warm water
  • 10g fine salt
  • 25g warm water
  • 100g shelled walnuts
  • extra wholemeal flour and some rice flour, for dusting

Walnuts

METHOD

Prepare your sourdough starter as in Tartine country bread instruction. You can also use your own 100% hydration old starter that has been sitting in the fridge; it will happily revive.

The whole process happens over 4 days: making leaven on the night of day 1; working the dough on day 2; shaping the loaf on day 3 and baking on the morning of day 4. There’s absolutely nothing wrong with baking on day 3, having allowed the loaf to prove a couple of hours in a warm place, but nothing beats fresh bread in the morning, does it?

The night before baking prepare the leaven: discard all but 1 tbsp. of the starter. Mix it with 200g warm water until dispersed. Add the flour, stir it until combined and leave at room temperature for 12 hours. It should become bubbly and puffed up. To test if it’s ready, scoop a teaspoon of it and see if it floats in a bowl of water. If it sinks, let it mature longer.

For the main dough, mix 125g of the leaven (the rest will become your starter for future baking and can live in the fridge) with 350g warm water in a large bowl; stir to disperse. Add the 400g white flour and the 100g wholemeal and mix to a rough dough with your hands or a dough whisk until there is no more dry flour visible. Cover the bowl with a damp tea towel and leave to rest for 25-40 minutes at room temperature.

Rough sourdough

Add the salt and the remaining 25g of warm water to the dough and mix with your hands, the dough whisk or in a standing mixer with a dough hook attachment until it smooths a little and starts pulling away from the sides of the bowl. Cover with the damp tea towel and leave in a warm place for 30 minutes.

Toast the walnuts, broken into small chunks, in the oven at 200C/400F/gas 6 for about 10 minutes; until a little darker and fragrant. Leave to cool.

Stretching and folding sourdough

For the next 3 hours stretch and fold the dough every 30 minutes, then return it to the warm place. To do that, wet your hands; grab the underside of the dough at one quadrant and stretch it up over the rest of the dough. Repeat this three more times, rotating bowl a quarter turn for each fold. Do this every half an hour, six times in total. Add the walnuts at the second turn, pressing them into the dough to incorporate evenly.

Walnut dough

At the end of the session the dough should increase in volume 20 to 30 percent. There will be some black streaks going through it from the tannins that the walnuts contain. That’s nothing to worry about and will look quite attractive in the baked loaf.

Cover the bowl with cling film and place in the fridge for up to 24 hours.

The next day take it out early, so it returns to room temperature; it will take a couple of hours.

When it gets warmer, turn it out onto a work surface and dust the top with flour. Flip it floured side down and fold it over, so that the outside is all floured; form into a round. Dust with more flour, cover with a towel and leave for 30 minutes.

Prepare a proving basket or bowl lined with cloth flouring it generously with the whole-rice flour mix.

Dust the dough round with flour and shape to an oblong loaf (here’s how). Transfer the loaf into the basket seam side up. Cover with a towel and return to the fridge for the next 18 – 20 hours.

Risen loaf of Tartine walnut bread

The next morning preheat a pizza stone or a heavy baking sheet for at least 40 minutes in the oven at 250C/500F/max gas. Dust the top of dough, still in the basket, with the wholemeal/rice-flour mixture. Prepare a length of parchment to turn the loaf out onto. Do it carefully, not to deflate the loaf. Slash along the top with a baker’s razor or a sharp knife.

Transfer the loaf with the parchment into the oven using a peel or another flat baking sheet. Spray the oven with water or drop a very wet cloth on the bottom of the oven. Reduce temperature to 230C/450F and bake for 50 minutes. Reduce the temperature again after 40 minutes to 200C/400F/gas 6 if the loaf is getting too dark.

Walnut sourdough

Transfer bread to a wire rack to cool for at least 15 minutes before slicing.

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