The Complete Beginner’s Guide to Sourdough Bread Baking in the UK

Sourdough bread has had something of a renaissance in British kitchens over the past decade. What was once the preserve of artisan bakeries in East London or Edinburgh’s independent food markets has become a genuine weekend hobby for home bakers across the country. And with good reason — a properly made sourdough loaf, with its crackling crust, open crumb, and complex tangy flavour, is genuinely one of the most satisfying things you can produce in a domestic kitchen.

But let’s be honest: sourdough has a reputation for being difficult, temperamental, and demanding. Some of that reputation is earned. This is not a quick-mix loaf you can knock together in an afternoon. It requires patience, observation, and a willingness to fail a few times before things click into place. What follows is a practical, no-nonsense guide designed specifically for UK bakers — covering everything from sourcing ingredients to understanding why your loaf came out flat.

What Actually Makes Sourdough Different?

Before touching flour, it helps to understand what you are actually making. Sourdough is leavened not by commercial yeast from a packet, but by a living culture of wild yeast and lactic acid bacteria. This culture — called a starter — ferments the dough over a long period, typically between 8 and 24 hours depending on your method and ambient temperature.

The fermentation process does several things simultaneously. The wild yeast produces carbon dioxide, which makes the bread rise. The bacteria produce lactic and acetic acids, which give sourdough its characteristic flavour and also improve the keeping quality of the finished loaf. A well-made sourdough will stay fresh for four or five days at room temperature — far longer than a supermarket loaf or a yeasted homemade bread.

The long fermentation also breaks down phytic acid in the grain, which interferes with mineral absorption, making sourdough arguably easier to digest than standard bread. This is one reason many people who find commercial bread bloating or uncomfortable report no such issues with sourdough.

Building Your Starter

Your starter is the foundation of everything. Without a healthy, active starter, your bread will not rise properly and will lack flavour. The good news is that building one from scratch is straightforward, even if it takes a week or so before it is ready to bake with.

What You Need

Strong white bread flour or wholemeal flour (or a mix of both)
Unchlorinated water — in many parts of the UK, tap water is heavily chlorinated and can inhibit fermentation; use filtered water or leave tap water in an open jug overnight
A clean glass jar of at least 500ml capacity
Kitchen scales

The Process

Day one: combine 50g of flour with 50g of water in your jar and stir vigorously until no dry flour remains. Cover loosely — a piece of cloth secured with a rubber band works well — and leave at room temperature. In most UK homes, this means somewhere between 18°C and 22°C.

Days two through seven: once per day, discard roughly half the starter and feed it with another 50g of flour and 50g of water. By around day three or four, you should start to see bubbles forming and the starter doubling in size between feedings. By day seven, it should be reliably doubling within four to six hours of a feed and smelling pleasantly tangy or slightly fruity. At this point, it is ready to bake with.

A tip on flour: wholemeal flour ferments more vigorously than white because it contains more wild yeast and bacteria. If your starter seems sluggish, swap to wholemeal or rye flour for a few days. Marriages Organic Strong Wholemeal from Shipton Mill (available online, around £2.20 per kg) is a particularly good option for getting a starter going.

Equipment: What You Actually Need

Sourdough does not require a specialist kitchen. That said, a few pieces of kit will make your life considerably easier.

Digital kitchen scales: Baking is chemistry. Measuring by volume is imprecise and a recipe that works perfectly in grams will often fail if you try to convert it to cups. A decent set of scales costs around £10 to £15 from any supermarket or Lakeland.
A Dutch oven or lidded cast iron casserole: This is the single most important piece of equipment for beginners. Baking the loaf in a covered pot traps steam, which keeps the crust soft long enough for the bread to expand properly before setting. A Lodge or Le Creuset casserole works brilliantly, though even a cheap lidded casserole from B&M or Aldi (around £15 to £20) will do the job.
A banneton (proving basket): These rattan baskets give the dough its shape during the final proof and create those attractive concentric rings on the finished loaf. They are available on Amazon or from Bakery Bits for around £8 to £15.
A bread lame or sharp knife: You need to score the top of your dough before it goes in the oven. A lame is a razor blade on a stick and costs around £5 to £8. A sharp serrated knife or a clean craft knife blade also works.
A large mixing bowl and a bench scraper: The bowl for mixing and bulk fermentation, the scraper for handling sticky dough without adding excess flour.

Choosing Your Flour

This is an area where UK bakers are genuinely fortunate. British flour milling has undergone a quiet revolution, and there are now several excellent mills producing high-quality bread flour that is widely available.

For a basic sourdough, you want strong bread flour with a protein content of at least 12%. Supermarket own-brand strong white bread flour (typically around £1.20 per 1.5kg) will work, but the results from a proper milling operation are noticeably better.

Some reliable UK flour options include:

Shipton Mill Organic Strong White Flour — available online from around £1.80 per kg, excellent protein content and consistent results
Marriages Canadian Strong White — widely available in supermarkets at around £1.50 per 1.5kg, very reliable for beginners
Doves Farm Organic Strong White Flour — available in most Waitrose and health food shops, around £2.00 per 1kg
Bacheldre Watermill Flour — a Welsh mill producing excellent stoneground flours, available online

As you grow more confident, consider adding a proportion of wholemeal, spelt, or rye flour to your loaves. Even 10% wholemeal added to a white loaf adds complexity and improves fermentation.

The Basic Sourdough Recipe

The following recipe produces a single 800g to 900g loaf. It uses a relatively simple method suited to beginners.

Ingredients

450g strong white bread flour
50g strong wholemeal flour
375g water (at roughly 25°C)
100g active starter (fed 4 to 6 hours before use, at its peak)
10g fine sea salt

Method Overview

Autolyse: Combine the flours and 325g of the water (holding back 50g). Mix until no dry flour remains, then cover and leave for 30 to 60 minutes. This rest period allows the flour to fully hydrate and begins gluten development without any effort on your part.

Adding starter and salt: Add the starter to the dough along with the remaining 50g of water and the salt. Mix thoroughly, squeezing the dough through your fingers to fully incorporate everything.

Bulk fermentation: Cover the bowl and leave at room temperature for 4 to 6 hours. During the first two hours, perform a series of stretch-and-folds every 30 minutes. To do this, wet your hand, grab one side of the dough, stretch it upward, and fold it over the top. Rotate the bowl 90 degrees and repeat. Four of these folds constitute one set; do four sets total. The dough will become noticeably smoother and more elastic as you go.

After your stretch-and-folds are complete, leave the dough undisturbed for the remainder of the bulk ferment. It is ready when it has increased by roughly 50 to 75% in volume and feels airy and slightly jiggly when you shake the bowl gently.

Shaping: Turn the dough onto an unfloured surface. Using your bench scraper and your hand, shape it into a tight round by dragging it toward you across the surface, building surface tension as you go. Let it rest for 20 minutes, then perform a final shape and transfer it seam-side up into a well-floured banneton.

Cold proof: Place the banneton in a plastic bag or cover with a shower cap (a surprisingly effective and reusable option) and refrigerate overnight — 8 to 16 hours. This cold proof develops flavour and makes the dough easier to score.

Baking: Place your Dutch oven in the oven and preheat to 250°C (230°C fan) for at least 45 minutes. Turn the cold dough directly from the fridge onto a piece of baking parchment, score it with a confident single slash or your preferred pattern, and lower it carefully into the screaming hot pot. Bake covered for 20 minutes, then remove the lid and bake for a further 20 to 25 minutes until the crust is a deep mahogany brown. Do not be afraid of colour — an under-baked sourdough will have a gummy crumb.

Leave to cool on a wire rack for at least one hour before cutting. The internal structure continues to set as the loaf cools, and cutting it too early will give you a dense, slightly doughy crumb.

Common Problems and How to Fix Them

The Loaf Did Not Rise (or Barely Rose)

This is almost always a starter problem. Either the starter was not active enough when you used it — it should be at or near its peak, doubled in size and full of bubbles — or fermentation was too slow due to cold temperatures. UK homes in winter can drop to 17°C or below, which significantly slows fermentation. Try placing your dough near a warm spot, such as on top of the fridge or in an oven with just the light on.

The Crust Is Pale and Soft

The oven was not hot enough, or the loaf was not baked long enough. Make sure your oven is fully preheated and do not open the door during the first 20 minutes. If
you are baking in a lidded Dutch oven, remove the lid for the final 15 to 20 minutes so the crust can colour properly. A pale loaf can also mean there was not enough steam trapped around the bread early in the bake. Steam helps the crust stay flexible at first, allowing a better rise, and later contributes to a glossy, deeply coloured finish.

The Crumb Is Gummy

A gummy texture usually points to underbaking or cutting into the loaf too soon. Sourdough continues to set as it cools, so always leave it for at least one to two hours before slicing. If you consistently get a damp interior, try lowering the oven temperature slightly and baking for a little longer. A fully baked loaf should feel light for its size and sound hollow when tapped on the base.

Simple UK Flour Suggestions

If you are shopping in a typical UK supermarket, strong white bread flour is the easiest place to start. Wholemeal flour is very useful for feeding a starter and can also be blended into dough for extra flavour. Rye flour, if available, is excellent for boosting starter activity because it ferments enthusiastically. Many beginners get good results with a mix of 80 to 90 per cent strong white bread flour and 10 to 20 per cent wholemeal.

How to Store Your Sourdough

Once fully cool, keep your loaf cut-side down on a board or wrapped in a clean tea towel. This helps preserve the crust better than plastic, which can make it soften. Sourdough generally keeps well for several days. If you will not finish it in time, slice and freeze it, then toast slices straight from the freezer as needed.

Your First Loaf Does Not Need to Be Perfect

Sourdough baking is a skill that improves quickly with practice. Temperature, flour, timing and hydration all affect the final loaf, so every bake teaches you something useful. Keep notes on how long fermentation took, how the dough felt, and how the loaf turned out. After just a few attempts, you will start to recognise the signs of a healthy starter, properly fermented dough and a well-baked loaf.

With a little patience and regular practice, sourdough bread baking in the UK can fit easily into home life, even with cooler kitchens and changeable conditions. Start simple, trust the process, and focus on learning how the dough looks and feels. Before long, you will be turning out fragrant, crusty loaves with confidence.