Go Back
The sourdough starter is bubbly and in a glass jar on a cutting board.
Print Recipe
5 from 1 vote

Recipe for Sourdough Starter

When starting your sourdough journey, you'll need to know how to make a sourdough starter from scratch! All you need is water, flour, and some patience! Once you have your active and bubbly starter, you can make so many delicious sourdough recipes right in your own kitchen!
Prep Time6 days
Cook Time0 minutes
Total Time6 days
Course: Side Dish
Cuisine: American
Author: Lynn Polito

Equipment

Ingredients

  • 100 g Unbleached All Purpose Flour
  • 100 g Filtered Water

Instructions

  • Day 1: Begin by combining 100 grams of unbleached all-purpose flour with 100 grams of filtered water in a glass jar. Stir the mixture thoroughly to form a thick, pancake-batter-like consistency. Since we are just mixing flour and water together, there should not be much of a smell at this point. Cover the container loosely with a lid or cloth to allow airflow. Do not cover the jar tightly. Let it sit on the counter for 24 hours.
  • Day 2: Time for it's first feeding! Discard half of the mixture and keep 100 grams of your sourdough starter to a glass jar. Add 100 grams of filtered water and 100 grams of unbleached flour. Mix well until a thick consistency forms. Covering loosely.
  • Days 3-5: Every 24 hours, repeat the process in Day 2. Each day, there should be more sourdough starter in the jar. Discard all but 100 grams of the starter and mix back 100 grams of water and 100 grams of unbleached flour. After each day, look for bubbles forming on the surface after feedings. This indicates the production of carbon dioxide by yeast activity. The starter should show signs of rising or expanding in volume after each feeding. There should also be a slight tangy smell in the starter after each feeding.
  • By day 6, you should see bubbles forming on the top of your starter, indicating the presence of active fermentation. It will also rise and almost double in size. If you smell your starter, you'll smell slightly tangy aroma and that is perfect! If you notice these signs, congratulations – your sourdough starter is alive and thriving!
  • Once your starter is established, maintain it by keeping it at room temperature and continuing with regular feedings. If you plan to bake frequently, you can store it on the kitchen counter. Otherwise, refrigerate in a closed glass jar and bring it to room temperature before each use.

Notes

Keep it consistent! Maintain a consistent feeding schedule to keep your sourdough starter healthy and active. That means, if you starter the first day feeding your starter at 8am, make sure you feed it everyday at 8am. Sourdough loves consistency!
Temperature matters! Keep your starter at a consistent room temperature (ideally around 70°F/21°C) for optimal fermentation. Too much of a fluctuation in the temperature will throw off the fermentation process and result in too many bubbles and not enough fermentation. Like I mentioned before, sourdough loves consistency!
Be patient! Don't be discouraged if your starter takes a bit longer to develop. Each environment is unique, and the process may vary. If you are starting this sourdough starter in the winter, it may take a little longer for the bubbles and fermentation to happen due to the colder weather. In the Summer, bubbles and fermentation will happen pretty quickly due to the Summer heat. It can take up to 2 weeks for a sourdough starter to be ready to bake with.