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–+ servings
A white mug filled with clear broth garnished with chopped green onions, placed on a gray plate. Cubes of tofu and more green onion pieces are scattered around the plate. A small bowl with green onions is in the background.

5-Minute Probiotic Miso Soup for Gut Health

This is my go-to daily gut health ritual. Made with just a few simple ingredients, it delivers beneficial probiotics in the coziest, most comforting way.
Yield: 1 serving
Prep Time: 5 minutes
Total Time: 5 minutes

Ingredients
 

  • 1½ cups reduced-sodium vegetable broth, chicken broth/stock, or bone broth
  • 1 tablespoon white miso paste

Optional Flavor Add-Ins:

  • ⅛ to ¼ teaspoon ginger powder
  • ⅛ teaspoon sesame oil
  • 1 teaspoon lemon juice
  • ½ teaspoon soy sauce, or tamari
  • ½ to 1 tablespoon chopped scallions

Instructions
 

  • Make the miso slurry (smooth + probiotic-friendly): In a large mug, add 1 tablespoon miso paste. Stir in 2 tablespoons warm water (not boiling) and mix until completely smooth.
  • Gently heat broth to protect probiotic activity (aim for ~120°F):
    Microwave method: Add 1½ cups broth (room temp or chilled) to the mug and stir well to combine with the slurry. If you’re using any optional add-ins, you can stir them in now. Heat in short intervals, checking with a thermometer, until the soup reaches about 120°F—that’s the sweet spot I aim for to help preserve probiotic activity. Microwaves vary, so once you find the timing that works for your microwave, you’ll be set. For me, it’s about 120 seconds.
    Stovetop method: Warm 1½ cups broth in a small saucepan over low heat, stirring occasionally. Use a thermometer and stop heating when it reaches ~120°F (warm and steamy, not simmering). Then pour the warm broth into your mug and stir into the miso slurry until smooth. You can add any optional seasonings either to the saucepan while warming or right in the mug after mixing.
  • If it creeps a bit over 120°F, that’s okay—just try to keep it as close to (or under) 120°F as possible for best results.
  • Sip and enjoy: Give it one last gentle stir and enjoy it warm—cozy, savory, and gut-loving.

Notes

• Keep it warm, not hot: Avoid boiling at any stage. High heat can compromise probiotic activity.
• Use it as a light sauce: This broth is delish drizzled over shredded chicken, cooked ground turkey, tofu, rice, quinoa, roasted veggies, or sautéed greens.
• Sodium + Blood Pressure Friendly Tips: Miso paste is naturally high in sodium—that’s part of traditional fermentation (salt helps preserve the miso and builds that signature savory, umami flavor). So while this cozy probiotic broth can be a wonderful daily ritual, the sodium can add up quickly, especially if you’re watching your salt intake or managing hypertension. To lower the sodium—without losing the effectiveness, try these tips:
  • Use 1 teaspoon miso instead of 1 tablespoon. This simple swap cuts sodium significantly while still delivering fermented-food benefits.
  • Choose low-sodium or unsalted broth (this makes a big difference). You can even use water.
  • Skip salty add-ins like soy sauce (or use a tiny splash of low-sodium tamari if needed).
  • Boost flavor without salt: add ginger, scallions, and/or a squeeze of lemon or splash of rice vinegar to perk it up.
If you have hypertension (or kidney/heart concerns), it’s always smart to check with your doctor or RD about what sodium level is right for you.
• Storage: Miso paste lasts for months in the fridge (keep it tightly sealed) but prepare the soup fresh for the best probiotic potential.
• Gluten-free: Choose certified GF miso and swap tamari for soy sauce. Vegan: Use vegetable broth (and double-check miso labels to ensure no fish-based ingredients).
Author: Joy Bauer, MS, RDN, CDN

Nutrition Information per serving

Calories: 50Carbohydrates: 11gProtein: 0gTotal Fat: 0g— Unsaturated Fat: 0g— Saturated Fat: 0gCholesterol: 0mgSodium: 830mgFiber: 5gTotal Sugar: 5g— Natural Sugar: 5g— Added Sugar: 0g
Nutrition information is calculated using a leading industry software. That being said, brands can vary, and there may be slight fluctuations in the numbers.