Sourdough starter

Sourdough starter

10 mins Prep

Sourdough starter is flour and water left to ferment. With regular feeding of flour and water, a starter not only creates a healthy biome of yeast that adds a depth of flavour to bread, it also has many health benefits. Sourdough bread contains prebiotics, which support a healthy gut’s microbiome

Created by Spinneys
Prep time 10 minutes
Fermentation time At least 48 hours to 5 days
Serves Makes 550g
Cuisine European
Diet Vegan
Preparation Easy
Nutrition (per serving)
Calories 239
Fat 0.8g
Saturates 0.1g
Protein 7.9g
Carbs 49.1g
Sugars 0.2g
Given the cook-at-home nature of Spinneys and natural variations in ingredients, nutritional information is approximated. See details


Cooking Instructions

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Pour the water into a large glass jar. Sprinkle or crumble the yeast onto the surface of the water. Leave to dissolve for 5 minutes. Add the flour and stir until combined.


Cover the jar with a tea towel and ferment at room temperature for at least 48 hours and up to 5 days. The starter will become a loose, frothy batter. Stir once a day during this period. Use immediately or refrigerate indefinitely.


After using a portion of the starter, replace it with an equal amount of fl our and water to keep it active for the next time you make bread. For example, if a recipe calls for 250ml of the sourdough starter, after removing this amount stir 125g of fl our and 125ml of water into the remaining contents of the jar. Allow to ferment at room temperature for 12-24 hours before refrigerating.