This simple vegetarian soup was inspired by the traditional Romanian sour soup. You can expect a very special sour taste, lots of fresh veggies and an interesting eggy texture.

Ingredients needed

Here’s a basic list of all the ingredients that you will need to make this soup recipe. I know it may look like a lot, but this soup comes together quite quickly.
As always, you can find the full recipe with instructions and print options below!

  • Sweet Potatoes
  • Green Beans – I used frozen but fresh works great as well
  • Green Peas – I used frozen) but you can also use fresh
  • Celery Stick
  • Fennel
  • Garlic cloves
  • Shallots
  • Risotto Rice
  • Eggs
  • Himalayan salt
  • Parsley or Lovage
  • Lemon Juice – use the traditional “bors” if you have it
  • Water

For this soup I like using an assortment of vegetables that blend together to create a sweet taste that matches with the traditional sour taste. In terms of vegetables, I like to include things like green beans, green peas, celery, fennel, garlic, shallots, even a sweet potato and risotto rice.

Sweet potatoes works well for adding a bit of texture to the soup, and the same is true for risotto rice. At the end of the cooking process, I’ve used 2 eggs to add a bit more flavor and an eggy texture to the finished soup.

Simple Vegetarian Sour Soup in a large pot next to olives and chili (top view).

How do we obtain that special sour taste?

According to the traditional Romanian recipe, this soup of prepared using a local ingredient called “bors”. “Bors” is traditionally prepared from wheat or barley bran fermented in water. It’s a slightly yellowish sour liquid, which can also be drunk as such. We use it to obtain that special sour taste that’s characteristic to Eastern Europe soups.

In some parts of Romania, instead of “bors” people may use another local ingredient, namely the water used to make pickled cabbage |another delicacy of the Romanian cuisine). As a result, the taste of the soup will change to something more “local”.

For our recipe though, we’ll keep it more simple by using ingredients that anyone can have access to, namely freshly squeezed lemon juice. The lemon taste is pretty close to the traditional Romanian “bors” without the extra effort. If you are in Romania through, I suggest you buy the local “bors” and use that instead (see recipe notes).

How to make Vegetarian Sour Soup

  • Start by boiling the rice in a simple pot, with water, and let it cool down while we work on the main soup.
  • Next, add all the vegetables in a large pot and cover with water.
  • Bring to a boil and cook until the vegetables are soft.
  • Once the veggies are soft, lower the cooking temperature and add-in cooked rice. Continue to cook at a lower temperature.
  • In the meantime, add eggs to a medium bowl and best for 30 seconds using a fork.
  • Take one ladle of fresh hot soup and add it over beaten eggs. Mix for another 30 seconds to homogenize with beaten eggs.
  • Pour the contents of the bowl over the main soup. Use a fork to mix for 10-20 seconds until the creamed eggs incorporate into the main soup.
  • Finish by adding lemon juice, salt and herbs. Let it simmer for another minute, until the soup develops that special sour taste.
  • Your soup is now ready! Serve this sour soup as is or with your favorite extras (see below some ideas).
Simple Vegetarian Sour Soup in a large pot next to olives and chili.

How to serve it

In the Romanian cuisine, this type of soup is served as the first course in a two-course meal, usually consumed at lunch time.

You can serve this simple vegetarian sour soup by itself or pair it with your different extras:

  • Full Fat Sour Cream – this is how we serve this soup in Romania
  • Hot Pepper – either green or are peppers that are usually very hot
  • Olives – although olives do not grow in Romania, I love them with sour soup because of their healthy fats conten
  • White Cheese – sheep’s cheese, cow cheese or feta cheese
  • Walnuts – they add texture and lots of nutrients to this soup
  • Fresh Bread – Romanians love their bread but make sure to consume bread that was naturally fermented (sourdough bread works best here)

If you make this soup, let me know how it turned out! Leave a comment and don’t forget to #refreshmyhealth when you share a photo. Enjoy and share this simple vegetarian sour soup with someone you love!

What’s your favorite soup recipe? Would you try this sour soup? Let me know in the comments.

Simple Vegetarian Sour Soup in a large pot next to olives and chili.

Simple Vegetarian Sour Soup

Prep Time: 15 mins
Cook Time: 20 mins
Total Time: 35 mins
Servings: 6 portions
Print Recipe
This vegetarian soup was inspired by the traditional Romanian sour soup. You can expect a very special sour taste, lots of fresh veggies and an interesting eggy texture. De-li-cious!

Ingredients

  • 1 sweet potato (peeled, cubed)
  • 200 g frozen green beans
  • 200 g frozen green peas
  • 1 stick celery (chopped)
  • 1 slice fennel (chopped)
  • 2 cloves garlic (chopped)
  • 3-4 shallots (sliced)
  • 2 tbsp risotto rice (boiled)
  • 2 eggs (free range)
  • 1 tsp Himalayan salt
  • parsley and lovage (to taste)
  • 1 small lemon (juice only, or 1 small cup of “bors”)
  • water

Instructions

  • Prior to making this soup, you first have to boil the rice. Once the rice is almost cooked, remove the excess water and let it sit on the counter. We’ll be adding it to our soup towards the end of the cooking process.
  • In a large pot add sweet potatoes, green beans, green peas, celery, fennel, garlic cloves and shallots.
  • Add enough water to cover the ingredients and a bit more. Bring to a boil and keep it there until the sweet potatoes are soft (test them with a fork).
  • Lower the cooking temperature and add in pre-cooked rice. Let the soup simmer on the stovetop.
  • In the meantime, break eggs into a bowl and best them for 30 seconds using a fork or a whisk.
  • Take one ladle of fresh hot soup and add it over beaten eggs. Mix for another 30 seconds to homogenize with those beaten eggs.
  • Pour the contents of the bowl (beaten eggs incorporated into a bit of soup) over the main soup. Use a fork to mix for 10-20 seconds until the creamed eggs incorporate nicely.
  • Finish by adding lemon juice, salt and herbs. Let it simmer for another minute until the sour taste of the lemon has combined into the entire soup.
  • Remove from heat and set aside to rest for a few minutes. Let the flavors develop while you prepare the table.
  • Congratulations! Your vegetarian sour soup is now ready to be served.

Notes

This sour soup can be safely stored in the fridge for at least 3 days. The lemon juice will keep it fresh in all this time.
This Romanian sour soup recipe is traditionally made sour using a special ingredient called “bors”. “Bors” is a liquid ingredient used in the Romanian and Moldovan cuisines to make traditional sour soups. It consists of wheat or barley bran, sometimes sugar beet, fermented in water - a slightly yellowish, sour liquid, which can also be drunk as such.
For this recipe we are using freshly squeezed lemon juice as an alternative yo “bors”. If you have access to “bors”, use 1 cup of “bors” instead of 1 small lemon.
Course: Soup
Cuisine: Dairy-Free, Gluten-Free, Vegetarian
Keywords: easy soup, simple soup, sour soup, vegetable soup, vegetables, vegetarian soup
Author: Marcel Corbeanu
Marcel Corbeanu

Marcel Corbeanu

Hi, I'm Marcel! I'm a health coach, I write about health and wellness and I love cooking healthy food with fresh and simple ingredients.

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