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Easy Overnight Sourdough Starter from Scratch Recipe for Perfect Bread Every Time

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This easy overnight sourdough starter recipe uses simple ingredients and an overnight rest to create a lively, tangy starter perfect for homemade bread. It’s approachable for beginners and fits effortlessly into busy lives.

Ingredients

Scale
  • 200g (1 2/3 cups) unbleached all-purpose flour
  • 50g (1/3 cup) whole wheat flour
  • 230g (1 cup) filtered water, room temperature
  • Optional: 1 tablespoon rye flour

Instructions

  1. Mix the flours: In a glass jar, combine 200g (1 2/3 cups) unbleached all-purpose flour with 50g (1/3 cup) whole wheat flour. Optionally add 1 tablespoon rye flour to boost fermentation. Stir gently to blend.
  2. Add water: Pour in 230g (1 cup) room temperature filtered water. Stir until the mixture forms a thick, sticky batter with no dry flour remaining.
  3. Cover and mark: Use a breathable cover like a coffee filter or clean cloth secured with a rubber band. Place a rubber band around the jar at the batter’s initial height to track its rise. Avoid sealing airtight.
  4. Let it rest overnight: Set the jar in a warm spot around 70°F (21°C). After 12 to 16 hours, bubbles and some rise should appear.
  5. Feed your starter: Discard about half the starter. Add 100g (3/4 cup) all-purpose flour and 100g (7 tablespoons) water. Stir gently to combine.
  6. Repeat feeding: Continue feeding every 12 to 24 hours for 3 to 5 days until the starter is bubbly, rises predictably, and has a pleasant tangy aroma.
  7. Check readiness: When the starter doubles in size 4 to 6 hours after feeding and is full of bubbles, it’s ready for baking. Test by dropping a spoonful in water; if it floats, the starter is strong and active.

Notes

[‘Use filtered or dechlorinated water to avoid inhibiting yeast growth.’, ‘Keep starter at around 70°F (21°C) for best fermentation; too cold slows it down, too hot can kill yeast.’, ‘Discard half the starter before feeding to maintain acidity balance.’, ‘Mix gently to incorporate air without destroying bubbles.’, ‘Be patient; starter activity can vary day to day.’, ‘If starter smells rotten or alcoholic, discard and restart.’, ‘Mark the jar to track rise and keep a log for best results.’, ‘Refrigerate starter if baking less often and feed weekly.’, ‘Optional rye flour boosts fermentation but is not required.’]

Nutrition

Keywords: sourdough starter, overnight sourdough, homemade bread starter, easy sourdough, wild yeast starter, bread baking, fermentation