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What Is Kombu + Why You Should Be Eating It

Lisa Gatti
December 18, 2014
Lisa Gatti
Written by
December 18, 2014

Kombu (pronounced KOM-boo) is an edible sea vegetable. Hailing from Japan, it's most historically used as one of the three main ingredients in 'dashi' noodle broth as a flavor enhancer (and can pretty much be used in most broths for the same benefit). It can be found dried (which is how it's used in broths), pickled in vinegar or eaten fresh.

The other common use for kombu is to help make food, especially beans, more easily digestible.


The amino acids in the sea vegetable1 help break down the heavy starches in the beans, helping them move through your body a bit easier. The glutamic acid in kombu is also responsible for its umami flavor. It also reduces cooking times for the beans, as it helps to soften them while they boil.

Kombu is increasingly recognized in Western culture for its health and culinary benefits, with companies like Eden Foods using it in their canned beans instead of adding salt.

How To Cook With Kombu

A Tuscan White Bean soup is delicious, nutritious and reminiscent of Tuscany in the spring. In this version, kombu is added for a helpful aid to the beans, helping them cook quicker and digest easier. As you'll see below, a piece of dried kombu is added to the broth along with the beans and vegetables to simmer away.

Kale is another addition to this traditional Italian soup, adding superfood benefits like higher energy and brighter moods. This soup makes for the perfect soothing winter meal.

Tuscan White Bean + Kale Soup


  • 2 15-oz cans of cannellini beans (BPA free-brand recommended)
  • 2 tablespoons olive oil
  • 1 onion, chopped
  • 8 cups chicken stock
  • 1 bunch of kale, de-ribbed and cut into 1 inch ribbons
  • 1 (28oz) jar of diced tomatoes, drained
  • 1 clove of garlic, minced
  • 1-inch piece of dried kombu
  • sea salt + pepper to taste
  • fresh sage leaf to garnish


1. In a large soup pot, heat the olive oil and sauté the onion at medium heat until almost fully translucent. Add the minced garlic and cook for another 1-2 minutes. Add the chicken stock and bring to a boil. Add the kale, tomatoes, beans, kombu, salt and pepper.

2. Reduce the heat to low, cover partially, and allow to simmer for 20 minutes. Remove the kombu and garnish with fresh sage before serving.

Cover Photo: Shutterstock

Lisa Gatti author page.
Lisa Gatti

Lisa Gatti is a nutrition and digestive wellness expert, and owner of Culinary Therapy, LLC, a global nutrition practice based in NY. Culinary Therapy is all about simple, delicious food for great health. Lisa believes in food as medicine and remedy, helping clients with digestive issues and chronic conditions get to the root cause of their health problems, make simple shifts in their diet, and feel really well again so they can focus on living the life they were meant to live.

To find out more about Lisa's programs, visit There she offers a great free, downloadable E-Guide,“The Top 3 Foods You Should Be Eating, But Probably Aren't."