Top 10 · Updated October 2026

Highest-Protein Sourdough

Sourdough: typically 9.1 g of protein per 100 g (median of 12 products). The sourdough with the most protein per 100 g. Useful if you are trying to increase your protein intake. We checked 12 sourdough with complete data.

  1. 1 Sliced White Sourdough Bread with Protein

    Sliced White Sourdough Bread with Protein

    JASONS · 120g
    a NOVA 3 238 kcal 1.7 g sugar 20.3 g protein 6.4 g fat

    Also: Palm oil free · No additives

  2. 2 Whole meal sourdough

    Whole meal sourdough

    Ocado · 31g per slice
    NOVA 4 258 kcal 1.2 g sugar 11.6 g protein 3.6 g fat

    Also: Palm oil free

  3. 3 Pumpkin sunflower and oat sourdough loaf

    Pumpkin sunflower and oat sourdough loaf

    co op
    a NOVA 3 278 kcal 4.2 g sugar 10 g protein 7.3 g fat

    Also: Palm oil free · Vegetarian · No additives

  4. 4 White Sourdough Sliced Loaf

    White Sourdough Sliced Loaf

    Tesco Finest
    a NOVA 3 235 kcal 2.2 g sugar 9.5 g protein 0.9 g fat

    Also: Palm oil free · No additives

  5. 5 The Original San Francisco Sourdough

    The Original San Francisco Sourdough

    Boudin
    c NOVA 4 256 kcal 0 g sugar 9.3 g protein 0 g fat

    Also: Palm oil free · No additives

  6. 6 Crusty Rolls

    Crusty Rolls

    Sainsbury's taste the difference
    NOVA 4 300 kcal 2.9 g sugar 9.3 g protein 0.9 g fat

    Also: Palm oil free · Vegetarian

  7. 7 Rye Sourdough Bloomer

    Rye Sourdough Bloomer

    · 400 g
    NOVA 4 232 kcal 1.8 g sugar 8.8 g protein 1.2 g fat

    Also: Palm oil free · No additives

  8. 8 Cracked Wheat Sourdough Square Bread

    Cracked Wheat Sourdough Square Bread

    Goldminer Bakery · 24 oz
    NOVA 3 228 kcal 8.8 g protein 1.8 g fat

    Also: Palm oil free · No additives

  9. 9 Classic Sourdough

    Classic Sourdough

    Essential Baking
    NOVA 3 232 kcal 7.1 g protein 0.9 g fat

    Also: Palm oil free · Vegan · Vegetarian

  10. 10 Organic White Sourdough

    Organic White Sourdough

    Celtic Bakers · 500g
    c NOVA 3 234 kcal 0.4 g sugar 5.9 g protein 1 g fat

    Also: Palm oil free · No additives

How we built this list

We ranked all published sourdough 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 rankings