The Ultimate Sourdough Starter Guide (2024)

By Ellie Edwards

  • August 24th, 2020

  • Read More Guides to Bread Making

The Ultimate Sourdough Starter Guide (1)

One of the oldest forms of leavened bread has turned into the coolest carb to make and eat. Discoverhow to make the perfect sourdough starter and when you're ready move on to baking your first sourdoughloaf with our handy tips and tricks.

What is a sourdough starter?

Sourdough starter is a combination of flour and water, which, when mixed together, activates and produces carbon dioxide bubbles. This chemical reaction helps bread rise.

Unlike commercial yeast, a sourdough starter works with bacteria in the air. These wild bacteria produce acid, lending sourdough its distinctive sour tang.

How to make a sourdough starter

The Ultimate Sourdough Starter Guide (2)

The process of making sourdough starter from scratch takes about 5 days. Follow our instructions below for making your starter:

    Method:

    • Day 1: Mix 50g strong white bread flour with 50g warm-to-touch water and leave, loosely covered at room temperature for 24 hours.
    • Day 2: Mix another 50g strong white bread flour with 50g warm-to-touch water into the existing mixture and leave, loosely covered at room temperature for 24 hours.
    • Day 3: Repeat the day 2 process again.
    • Day 4: Repeat the day 2 process again.
    • Day 5: After four days, your sourdough starter should be looking nice and bubbly (if it doesn’t, keep feeding it with the above measurements once a day until it’s bubbly). Before you make your first loaf, discard all but 4 tbsp of the starter, feed it with another 50g of strong white bread flour and 50g warm-to-touch water, and leave, loosely covered for 8 hours. You are then ready to begin your first sourdough loaf.

    Sourdough starter is best kept in a jar, with the lid a little open. This gives the starter room to breathe, meaning it won’t explode! You want to feed your starter with warm water and keep it in a toasty spot, as warmth helps wake up the starter and keep it nice and bubbly.

    How do I keep my sourdough starter alive?

    Once you’ve created your starter, it’s possible to keep it alive for years, if not decades by following a few simple steps:

    1. When feeding your starter, discard all but 1 tbsp. This helps keep it fresh. You can keep the discard and use it to make crackers, pancakes and even crumpets.
    2. Once you’ve used your starter to make your levain (keep reading to learn more), you want to give your starter a really big feed (another 50g flour/50g water ratio) so it’s ready to use again next time you want to bake.
    3. When you’re not baking a loaf of sourdough, keep the covered starter in the fridge. When you want to bake again, take it out of the fridge 2 days before you want to bake, pour away any liquid that has pooled on top and feed it once or twice a day. The liquid might be grey, but this is completely normal.
    4. If you’re not going to be baking for a while (a few months), you can also freeze sourdough starter by spooning the liquid mixture into ice cube trays. When it’s time to bake again, let the cubes thaw, and feed twice a day for a few days.

    You’ll know when your sourdough starter is ready to use as it’ll have a sweet-sour banana-like scent and frothy head. If your starter doesn’t seem very active, it’s worth putting it somewhere warmer, or increasing the number of feeds up to two twice a day. And if it starts to smell of nail-polish remover, move it somewhere a little cooler.

    What is a levain?

    Sourdough bread is different from other breads in that it is made with a levain. The levain is just a larger version of your starter.

    1. To make the levain, you take a portion of sourdough starter and mix it with equal parts flour and warm water. This is then left overnight, ready to make the dough in the morning.
    2. In the morning, the bubbly levain is mixed with flour and water and left to rest for 20 minutes. This step is called autolyse, and is when the gluten forms bonds and structure. After this step, salt is added.

    Making sourdough might appear to be more time consuming than a farmhouse loaf, but a lot of time the dough sits and bubbles away on its own.

    After the bread has had its first rest and the salt has been added, you want to gently fold the dough up and over, turning 90 degrees, creating pockets of air. This process (also known as bulk fermentation) is done every 30 minutes for around 4 hours.

    The Ultimate Sourdough Starter Guide (3)

    Cracked your starter and want to learn how to make your first sourdough loaf?

    About the author

    Ellie Edwards is a food writer for Sous Chef. Previously she worked at olive magazine, writing about exciting new ingredients, UK restaurants and travelling the world to find the best cinnamon buns. When she's not exploring the likes of Belize, Kerala and Zanzibar, Ellie loves rustling up a feast in her London kitchen, with a particular passion for porridge, sourdough and negronis.

    Share:

    Facebook Share on Facebook Twitter Tweet on Twitter Email Share by Email Pinterest Pin on Pinterest

    The Ultimate Sourdough Starter Guide (2024)

    FAQs

    What happens if I forgot to discard the starter before feeding? ›

    If you don't get rid of the excess, eventually you'll have more starter than your feedings can sustain. After a few days, your daily 1/4 cup flour and water won't be enough to sustain your entire jar of starter, and your starter will be slow and sluggish, not much better than discard itself.

    Does sourdough starter get stronger with age? ›

    For most bakers, the answer is a clear no. Maurizio Leo, author of the award-winning bread cookbook The Perfect Loaf, still uses the first starter he ever made; it's now 12 years old. And while he's sentimental about that starter, he says its age doesn't really impact his bread.

    What is the best flour to feed sourdough starter? ›

    All-Purpose Flour: All-purpose flour, which is a blend of hard and soft wheat, is a popular choice for feeding sourdough starter. It provides a good balance of protein and starch, which promotes a healthy fermentation process. Bread Flour: Bread flour has a higher protein content compared to all-purpose flour.

    What is the 1/2/2 ratio for sourdough starter? ›

    A 1:2:2 feeding ratio would consist of one part existing starter, two parts flour and two parts water. For example, if you have 30g of existing starter, you would feed it 60g of flour and 60g of flour. The most common feeding ratios for daily maintenance are 1:1:1 or 1:2:2.

    Can I just feed my sourdough starter without discarding? ›

    If your recipe calls for more than 227g (about 1 cup) of starter, feed it without discarding until you've reached the amount you need (plus 113g to keep and feed again).

    Do you discard starter every time you feed it? ›

    Do I have to discard my sourdough starter? It would be best if you discarded some portion of your starter each time you feed it unless you want to continue to let it grow. Eventually, you need to discard the used “food” (flour and water) that's been used to sustain your starter during the last fermentation period.

    How old is the oldest active sourdough starter? ›

    Blackley's sourdough starter, created from 4,500 year-old yeast, is considered the oldest sourdough starter, per Oldest. Other starters like the Saint Honoratus Wheat also are quite old. A bakery called Chrissi's Farmhouse Bakery uses it and said, “This noble starter dates back 900 years.

    Can you overfeed your sourdough starter? ›

    Premature discarding and overfeeding will weaken your starter and elongate the process. Don't discard and re-feed a weak starter before it shows increasing bubble activity or height from the previous feeding. If you don't see more bubbles or a faster rise each day, skip a feeding, and give it more time.

    What happens if you put too much starter in sourdough bread? ›

    If you have too much starter compared to the additional flour and water you're adding, your hungry starter consumes all the nutrients and then it's not as bubbly.

    Can I use tap water for sourdough starter? ›

    *If making sourdough is new for you, do not be discouraged if you starter takes longer to get active than mine – stick with it, it will happen! *Tap water is usually fine, if you are not sure, use boiled and cooled water, you can use it at room temperature or cool; do not use distilled water.

    What is the healthiest flour to make sourdough bread? ›

    Whole wheat flour is an excellent choice for creating a sourdough starter due to its nutrient-rich composition and potential for fostering a robust microbial community. However, it's important to note that the quality of whole wheat flour can vary between brands.

    Is distilled water good for sourdough? ›

    Two that you want to avoid when it comes to your sourdough starter is distilled or reverse osmosis water. This type of water lacks the beneficial minerals and bacteria that your sourdough starter will thrive on. Instead, use filtered tap water or bottled spring water.

    How often should you clean your sourdough starter jar? ›

    Have you ever wondered whether you have to clean your sourdough starter jar? The simple answer is you don't need to clean your sourdough jar. It's just not necessary to clean your jar all that regularly, unless it's super crusty or you can't get your starter out or fresh flour and water in.

    Why isn t my sourdough starter doubling in size? ›

    Try reducing the water in your next feeding and see if you have different results. Also, the type of flour you are using can impede the rise of your starter. All-Purpose flour, for example, will not rise as robustly as a blend of bread flour and whole wheat flour.

    How soon after feeding sourdough starter can I use it? ›

    *Do not try baking with your starter right after feeding it. Allow time for it to grow and feast on the flour before using it. Starters are usually ready to bake with around 4-12 hours after a feeding depending on the amount you feed your starter. The larger the feeding, the more time it needs to ferment.

    How long can you wait to use discarded sourdough starter? ›

    You can store mature sourdough discard in the refrigerator indefinitely. As long as there is no mold, it is good to use. It may develop a grayish liquid on top called “hooch” which can be poured off before use or stirred in. If you stir it in, the flavor will become more sour.

    How long can I leave my starter out without feeding it? ›

    I wouldn't go more than 24 hours without feeding a very young sourdough starter (it may survive longer than this unfed however you will leave it open to the risk of mold). Mature sourdough starter aged more than 6 months old should be able to survive unfed on the counter for around 3-4 days without any risk of mold.

    What happens if you feed sourdough starter too soon? ›

    Premature discarding and overfeeding will weaken your starter and elongate the process. Don't discard and re-feed a weak starter before it shows increasing bubble activity or height from the previous feeding. If you don't see more bubbles or a faster rise each day, skip a feeding, and give it more time.

    Can you restart a starter from discard? ›

    Discard most of the starter (you can either just remove it from the jar or place some of the starter into a clean jar). Feed the remaining starter with 100g of flour and 100g of water. Let it sit out at room temp for around 12 hours. Take 50g of starter from the jar and feed it another 100g of flour and 100g of water.

    References

    Top Articles
    Latest Posts
    Article information

    Author: Patricia Veum II

    Last Updated:

    Views: 5967

    Rating: 4.3 / 5 (44 voted)

    Reviews: 83% of readers found this page helpful

    Author information

    Name: Patricia Veum II

    Birthday: 1994-12-16

    Address: 2064 Little Summit, Goldieton, MS 97651-0862

    Phone: +6873952696715

    Job: Principal Officer

    Hobby: Rafting, Cabaret, Candle making, Jigsaw puzzles, Inline skating, Magic, Graffiti

    Introduction: My name is Patricia Veum II, I am a vast, combative, smiling, famous, inexpensive, zealous, sparkling person who loves writing and wants to share my knowledge and understanding with you.