Top 10 · Updated October 2026

Highest-Protein Sourdough Bread

Sourdough bread: typically 8.2 g of protein per 100 g (median of 18 products). The sourdough bread with the most protein per 100 g. Useful if you are trying to increase your protein intake. We checked 13 sourdough bread with complete data.

  1. 1 Seedy seedy organic sourdough loaf

    Seedy seedy organic sourdough loaf

    · 600 g
    a NOVA 3 266 kcal 1.4 g sugar 10.5 g protein 8.6 g fat

    Also: Palm oil free · Vegan · Vegetarian

  2. 2 Sourdough grain

    Sourdough grain

    Aldi stores. Bakers life · 600g.
    a NOVA 4 239 kcal 2.7 g sugar 10.1 g protein 2.8 g fat
  3. 3 Collection crafted white sourdough

    Collection crafted white sourdough

    Marks & Spencer · 800g
    a NOVA 3 224 kcal 2.5 g sugar 9.6 g protein 1 g fat

    Also: Palm oil free · No additives

  4. 4 Taste the Difference

    Taste the Difference

    Sainsbury's · 500g
    b NOVA 4 248 kcal 2 g sugar 9.4 g protein 3 g fat

    Also: Palm oil free · No additives

  5. 5 Sourdough Rustic Country White

    Sourdough Rustic Country White

    Bertinet Bakery
    c NOVA 3 233 kcal 2.2 g sugar 8.9 g protein 1.6 g fat

    Also: Palm oil free · No additives

  6. 6 Taste the Difference Rye Sourdough

    Taste the Difference Rye Sourdough

    Sainsbury's · 350grams
    a NOVA 3 256 kcal 1.8 g sugar 8.7 g protein 1.7 g fat

    Also: Palm oil free · No additives

  7. 7 Slow-roast tomato sourdough

    Slow-roast tomato sourdough

    co op
    a NOVA 3 231 kcal 2.5 g sugar 7.4 g protein 2.1 g fat

    Also: Palm oil free

  8. 8 Sourdough bread

    Sourdough bread

    Portland French
    c NOVA 4 228 kcal 1.8 g sugar 7 g protein 0 g fat

    Also: Palm oil free

  9. 9 Sourdough bread

    Sourdough bread

    · 2 lbs
    c 170 kcal 0 g sugar 7 g protein 1.5 g fat
  10. 10 The Best XL Californian Style Sourdough Bloomer

    The Best XL Californian Style Sourdough Bloomer

    Morrisons Large Sourdough Bloomer
    NOVA 1 251 kcal 0.8 g sugar 6.9 g protein 2.1 g fat

    Also: Palm oil free · Vegan · Vegetarian

How we built this list

We ranked all published sourdough bread on Foodmetria that have a photo and the required nutrition data, using values per 100 g from the product label. Ties are broken by Nutri-Score and by how often shoppers scan the product. Rankings update automatically as label data changes. Read our methodology.

More sourdough bread rankings