What is sourdough discard gut healing soup?

Sourdough discard gut healing soup is a bone broth vegetable soup thickened with sourdough discard instead of flour or cornstarch. The discard adds fermented flavor, lactic acid bacteria, and prebiotic fiber that support the gut microbiome. It is a zero-waste, 30-minute weeknight soup that uses up starter you would otherwise discard.

Does sourdough discard survive cooking in soup?

Some of the lactic acid bacteria in sourdough discard are killed by heat above 140°F. Adding the discard at the very end of cooking using the tempering method preserves more live bacteria and fermentation compounds than adding it at the start. Even if the bacteria do not survive, the prebiotic fiber and fermentation metabolites remain in the finished soup.

How much sourdough discard should I add to soup?

Use 1/2 cup of sourdough discard per 4 cups of broth for a balanced, tangy thickening effect. Up to 3/4 cup works if you want a thicker, more pronounced sourdough flavor. More than 3/4 cup can make the sourdough discard gut healing soup taste overly sharp and acidic.

Can I use sourdough discard that has been in the fridge for a week?

Yes. Sourdough discard keeps well in the fridge for up to two weeks in a sealed jar. Older discard has more acidity and a sharper flavor, which works well in savory recipes like this sourdough discard gut healing soup. Just bring it to room temperature before using.

What vegetables work best in sourdough discard gut healing soup?

Carrots, celery, onion, garlic, kale, spinach, leeks, zucchini, sweet potato, and mushrooms all work well. Root vegetables that hold their shape during simmering are best for texture. Leafy greens added at the very end stay bright green and add prebiotic fiber without turning mushy.

Is sourdough discard gut healing soup good for IBS?

Sourdough fermentation breaks down FODMAPs in the flour, making sourdough discard lower in fermentable carbohydrates than unfermented wheat flour. For many people with mild IBS, sourdough-based recipes are easier to tolerate. However, individual responses vary and you should monitor your own reaction and consult a clinician if you have a diagnosed condition.

Can I make sourdough discard gut healing soup without bone broth?

Yes. Use a good-quality vegetable broth as a direct substitute for bone broth. You lose the collagen and glycine from the bone broth, but the sourdough discard's gut benefits remain fully intact. Add 1 tablespoon of miso paste to vegetable broth to recover some of the fermented umami depth that bone broth provides.

7 Powerful Reasons This Sourdough Discard Gut Healing Soup Works

Name: 7 Reasons This Sourdough Discard Gut Healing Soup Works
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Cuisine: American
Ingredients: 1/2 cup sourdough discard, room temperature; 4 cups bone broth, chicken or vegetable; 1 tablespoon olive oil or butter; 1 medium onion, diced; 3 cloves garlic, minced; 2 medium carrots, sliced into rounds; 2 stalks celery, sliced; 1 cup chopped kale or spinach; 1 teaspoon turmeric powder; 1/2 teaspoon black pepper; 1 teaspoon sea salt, adjust to taste; 1/2 teaspoon dried thyme; 1/2 lemon, juiced, added at the end

Description

Sourdough discard gut healing soup made in 30 minutes with bone broth, vegetables, and fermented discard as a natural thickener. Zero waste, rich flavor, and real gut health benefits in every bowl.

Ingredients

Scale

1/2 cup sourdough discard, room temperature

4 cups bone broth, chicken or vegetable

1 tablespoon olive oil or butter

1 medium onion, diced

3 cloves garlic, minced

2 medium carrots, sliced into rounds

2 stalks celery, sliced

1 cup chopped kale or spinach

1 teaspoon turmeric powder

1/2 teaspoon black pepper

1 teaspoon sea salt, adjust to taste

1/2 teaspoon dried thyme

1/2 lemon, juiced, added at the end

Instructions

1. Heat olive oil in a large pot over medium heat. Add diced onion and cook 3 to 4 minutes until softened.

2. Add minced garlic, carrots, celery, turmeric, thyme, salt, and pepper. Stir and cook 2 minutes so spices bloom in the oil.

3. Pour in bone broth and bring to a gentle boil. Reduce to a low simmer, cover, and cook 15 to 20 minutes until carrots are fork-tender.

4. Temper the discard: ladle 1/2 cup of hot soup into a bowl, add sourdough discard, and whisk until fully smooth.

5. Stir tempered discard mixture back into the soup pot continuously. Add kale or spinach and stir until wilted, about 2 minutes.

6. Squeeze in lemon juice, taste for salt, and serve immediately.

Notes

Storage: Refrigerate up to 4 days in a sealed container. Reheat gently over low heat, do not boil after the discard has been added.

Always temper the discard before adding to the soup. Adding cold discard directly to boiling soup causes curdling and uneven texture.

Use discard at room temperature, not cold from the fridge.

Do not boil the soup after adding the discard. Keep heat on low to preserve the fermentation benefits.

For a thicker soup use up to 3/4 cup discard. More than 3/4 cup can make the flavor too sharp.

Add 1 tablespoon miso paste with the broth for extra gut-supporting fermented depth.

Prep Time: 10 minutes
Cook Time: 20 minutes
Category: Soup
Method: Stovetop
Cuisine: American

Nutrition

Serving Size: 1 bowl (approx. 350ml)
Calories: 165
Sugar: 5
Sodium: 620
Fat: 7
Saturated Fat: 1
Unsaturated Fat: 5
Trans Fat: 0
Carbohydrates: 18
Fiber: 3
Protein: 8
Cholesterol: 0

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