Supermarket Sourdough Showdown: The Top 8 Loaves Taste-Tested by a Food Editor
It is no secret that supermarkets have jumped on the sourdough bandwagon, crafting their own versions of this beloved bread. But with so many options on the shelves, which store-bought sourdough loaves truly deliver on taste, texture, and authenticity? As a food editor, I embarked on a comprehensive taste-testing mission, slicing through more than 20 loaves to identify the standout performers. From artisanal brands to affordable everyday picks, here are the top eight supermarket sourdoughs that are worth your dough.
What Makes a True Sourdough?
Before diving into the reviews, it is crucial to understand what defines genuine sourdough. Swie Joo, head baker at The Palmerston, emphasises that "sourdough isn't a legally protected term, so technically any bread can currently be called sourdough." This means some "rustic" loaves might simply be standard yeasted bread with added flavourings to mimic the tang of authentic sourdough.
For a loaf to be considered true sourdough, it must be made with a live starter—a naturally developed blend of wild yeast and bacteria—rather than commercial yeast. It should also undergo a slow fermentation process. Joo advises checking the ingredient label before purchasing; if "yeast" is listed, it is not a genuine sourdough, as traditional loaves rely entirely on natural fermentation without any added raising agents.
The Testing Methodology
In my rigorous evaluation, I analysed the ingredient lists of each loaf, keeping Joo's advice in mind. I then taste-tested over 20 sourdoughs, including pre-sliced and non-sliced options from major supermarket own ranges, as well as branded and higher-end products available in stores. To ensure consistency, I primarily selected white loaves where possible. Each sample was assessed plain, in sandwiches, and as toast with butter. Key criteria included:
- Crumb: I looked for a spongy, springy texture with evenly sized and well-distributed air pockets.
- Crust: The exterior was evaluated for a good crusty crunch.
- Taste: I assessed the tangy flavour characteristic of sourdough, noting any earthy or nutty notes.
- Shelf Life: I monitored freshness, with sourdough typically lasting two to three days before staling and showing mould after five to seven days.
The Top 8 Supermarket Sourdough Loaves
1. Best Supermarket Sourdough Overall: Wildfarmed White Sourdough Bread
Priced at £4 from Waitrose.com, this loaf stands out for its commitment to regenerative farming practices. Co-founded by Andy Cato of Groove Armada and George Lamb, Wildfarmed uses regeneratively grown wheat from farms in France and the UK. The bread is slow-fermented over 32 hours, hand-shaped, and scored, resulting in a pleasing chewiness and slight tang. While it lacks a very open crumb, its ethical ethos and quality make it a top choice.
2. Best Runner-Up Supermarket Sourdough: Gail’s San Francisco Sourdough
Available for £5 at Waitrose.com, this artisan bakery loaf offers a deliciously darkened brown crust with a nice chew. Made with a blend of grains including spelt, emmer, and rye, it boasts a flavourful profile and an open crumb. Though expensive, it is a classic option that works well in various dishes, from sandwiches to breadcrumb toppings.
3. Best Pre-Packaged Supermarket Sourdough: Bertinet Bakery Rustic Country White Sourdough
At £2 from Waitrose.com, this affordable loaf from Bath-based Bertinet Bakery uses heritage and sustainably grown grains. It is slow-fermented and hand-shaped without preservatives, offering a nice tang and a texture reminiscent of wholemeal bread. It is an excellent choice for toast and everyday use.
4. Best Supermarket Sourdough for Flavour: Waitrose No 1 White Sourdough Bread
Priced at £2.25 from Waitrose.com, this pre-sliced loaf from Waitrose's premium range impressed with its intense tangy flavour. While it lacks a crusty exterior typical of pre-packaged breads, it has a good spring and makes exceptional toast, earning praise from multiple testers.
5. Best Everyday Supermarket Sourdough: Exceptional by Asda White Sourdough Loaf
Costing £2 from Asda.com, this pre-sliced loaf exceeded expectations with its even crumb and decent structure. Made with aged wild yeast, it offers a nicely tangy flavour. Though the crust dries out due to slicing, it is one of the better packaged options available.
6. Best Supermarket Sourdough for Toast: Sainsbury's Taste the Difference White Sourdough Half Bloomer
At £2 from Sainsburys.co.uk, this affordable loaf is soft and lacks crustiness, making it more akin to conventional white bread. However, its springy crumb performs well when toasted, offering a decent everyday option for those on a budget.
7. Best Gluten-Free Supermarket Sourdough: Good Grain Bakery Gluten-Free Seeded Sourdough
Priced at £6.20 from Ocado.com, this seeded loaf is made with organic gluten-free flours like quinoa, rice, and maize. While dense like most gluten-free breads, it is a respectable replica for those avoiding gluten, with testers appreciating its flavour and texture.
8. Best Supermarket Sourdough with an Evenly Distributed Crumb: Co-op Irresistible Slow Crafted White Sourdough Bloomer
Available for £3 from Coop.co.uk, this dinky loaf features a better crust than many tested and an evenly distributed crumb with little air pockets. Though it has a low rise, it makes great toast and is an affordable choice for sourdough enthusiasts.
Expert Insights and Final Thoughts
Swie Joo's guidance on ingredient checking is invaluable for shoppers seeking authentic sourdough. While artisan bakers often produce superior loaves, supermarkets have made significant strides in quality. Wildfarmed and Gail's lead the pack with their regenerative and artisanal approaches, but budget-friendly options like Asda's and Waitrose's No 1 range also deliver on flavour and value.
In summary, whether you are after a luxury bake or an everyday staple, there is a supermarket sourdough to suit every palate and purse. Remember to scrutinise labels for true fermentation and enjoy the tangy, airy goodness that a well-crafted loaf can bring to your table.
