To make a starter, you’ll need three ingredients: flour, water, and time. Traditionally, rye flour is used because it has a higher concentration of wild yeast and bacteria, but you can also use whole wheat or all-purpose flour. It’s important to note that tap water may contain chlorine, which can inhibit yeast growth. To avoid this, use filtered or bottled water. Additionally, you’ll need a glass or ceramic container with a wide mouth, as well as a cloth or plastic wrap to cover it.
Begin by mixing equal parts flour and water in a clean container. For example, if you use 50 grams of flour, add 50 grams of water. Stir the mixture vigorously to incorporate air and activate the natural yeast present in the flour. Cover the container loosely with a cloth or plastic wrap to allow airflow while keeping out dust and contaminants.
Place the container in a warm spot, around 70-75°F (21-24°C), for 24 hours. The warmth will help promote yeast activity. After 24 hours, discard half of the mixture and feed it with fresh flour and water, again in equal parts. For example, if you started with 50 grams of flour and 50 grams of water, add another 50 grams of flour and 50 grams of water. Mix thoroughly and cover again, returning the container to its warm spot.
Repeat this feeding process every 24 hours for the next several days, discarding half of the mixture each feeding. This routine allows the yeast and bacteria to multiply and establish a robust and healthy culture. As the starter ferments, it will begin to develop a distinct odor and may show signs of bubbling and rising. These are all positive indicators that the yeast and bacteria are actively working.
Around day 5 or 6, you should start to notice significant changes in your starter. It should have a strong sour smell and exhibit vigorous bubbling and rising. At this stage, you can transition to a daily feeding schedule or refrigerate the starter and feed it once a week to maintain its activity. To feed your starter, discard about half of it and add equal parts flour and water to the remaining portion. For example, if you have 100 grams of starter, discard 50 grams and add 50 grams of flour and 50 grams of water.
With your starter ready, you can now use it to bake sourdough bread or experiment with other sourdough recipes. Always remember to reserve a small portion of your starter and continue to feed and nurture it to keep it alive and active.
Making a sourdough starter is a labor of love that rewards you with delicious bread and a deeper understanding of the fermentation process. It may require some trial and error, as every environment and flour type will yield different results. So don’t be discouraged if your first attempt doesn’t meet expectations. Just keep experimenting and refining your technique, and soon enough, you’ll have a perfect homemade starter that will become the key ingredient in your sourdough adventures.