Easy Keto Oxtail Soup Recipe from Spain

Do you want to indulge in a super delicious dish while still taking care of your keto diet? Thankfully, there are plenty of Spanish soup recipes that are keto-friendly and waiting for you.

The keto oxtail soup is a low-carb alternative to the classic version, with some changes in the ingredients but maintaining the same beloved and fantastic flavor.

To learn how to make it from scratch, along with the best tips for storing, serving, and customizing the ingredients, simply continue reading this article.

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Pssst…!!?? You can’t get enough of Spanish oxtail recipes? Have a look at my other posts: 

• Mexican oxtail soup

• Oxtail stew with vegetables

• Oxtail noodle soup

Background of the Dish

This easy oxtail soup was created in recent years as the keto diet gained a new level of popularity and became mainstream.

The keto oxtail soup has a pretty similar base to the traditional oxtail soup recipe, with the difference that you have to make sure that all of the spices and broth are keto-friendly, and you can’t use wine.

The best part about this oxtail vegetable soup is that it’s a great way to have a delicious meal without going off track with the keto diet, and it is also super easy to make.

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Things You’ll Need for Keto Oxtail Soup

To make this keto oxtail soup, you need oxtail, keto-friendly broth, carrots, celery stalks, onion, garlic cloves, and olive oil as the main ingredients.

The only equipment you will need to prepare this vegetable soup with oxtails is a large pot.

Ingredients

• 1kg oxtail
• 8 cups (2l) beef broth (homemade or store-bought, preferably low-sodium)
• 2 tablespoons olive oil
• 1 onion
• 2 carrots (adjust or omit for lower carb content)
• 3 celery stalks
• 4 garlic cloves
• 1 teaspoon dried thyme
• 1 teaspoon dried rosemary
• 1 bay leaf
• Salt and pepper to taste
• 1 cup (100gr) chopped cauliflower (optional, for added texture)

How to Make Keto Oxtail Soup – Step by Step Guide

1. For the first step in this keto oxtail soup recipe, peel and chop the onion and carrots into small squares. Also, peel and mince the garlic cloves. Lastly, clean and slice the celery stalks. Set them aside.

2. After that, pat the oxtail dry with kitchen paper. Cut into bite-sized chunks and season on both sides. 

3. Then, heat olive oil in a large pot over medium-high heat. Sear the oxtail cubes on all sides until golden.

4. Now, add diced onion, chopped carrots, celery, and minced garlic to the pot. Sauté until the vegetables are tender. Stir in thyme, rosemary, and bay leaf. Season with additional salt and pepper to taste.

5. For the next step in the best oxtail soup recipe, add the beef broth, ensuring that it covers the oxtail and vegetables. Bring the Spanish oxtail soup to a simmer.

6. After that, reduce the heat to low, cover the pot, and let it simmer for 2 to 2.5 hours. Stir occasionally and check the oxtail for tenderness. About 30 minutes before the soup is done, add the chopped cauliflower if using.

7. Finally, once the oxtail is tender, discard the bay leaf. You can now serve the keto oxtail soup warm and enjoy.

Substitution of Ingredients

In essence, this soup is similar to any other oxtail soup with vegetables but you have to be careful with the changes that you make to the ingredients so that it doesn’t stop being a keto oxtail soup.

First, if you can’t find keto-friendly broth at your local stores, then you can check our oxtail broth recipe, which can be used during this diet.

To make this old-fashioned oxtail soup recipe more similar to the classic oxtail soup with mixed vegetables you can add leafy greens (such as kale or spinach), zucchini, broccoli, or diced tomatoes.

Do you want to spice things up? Then take inspiration from the oxtail pepper soup and add bell peppers to this soup, with other spices like chili flakes and hot sauce.

Another great keto oxtail recipe that you can prepare is the fantastic keto oxtail stew: it is pretty similar to this one but with half the amount of broth.

Tips on Serving Keto Oxtail Soup

With this southern oxtail soup recipe, you will have a fantastic main dish ready to be served right away for lunch or dinner.

To ensure that this keto oxtail soup remains keto-friendly, you can top it with freshly chopped parsley or green onions to add freshness and more color.

If you want to add another flavor profile to this oxtail soup recipe, you can grate some lemon zest on top right before serving or sprinkle a bit of Parmesan cheese.

Similar to most keto oxtail recipes, a great addition is to include crumbled bacon so that you get a smoky and savory crunch in your Spanish oxtail soup.

We also have a bunch of other keto recipes like the keto mackerel recipe, the keto gazpacho, and the keto Spanish rice.

How to Store Keto Oxtail Soup

Something we love about this beef vegetable soup with oxtail is that you can store it in the fridge or freezer, and it will preserve its original flavor and texture.

Once you finish preparing this easy oxtail soup recipe, let it cool to room temperature and place it in a covered airtight container.

After that, store the keto oxtail soup in the fridge, where it can last up to 3 days, or place it in the freezer, where it can last up to 2 months.

When you are ready to enjoy the best oxtail vegetable soup, you can thaw it overnight in the fridge and reheat it on the stove over medium heat, stirring from time to time.

Other Spanish oxtail recipes that you can prepare and store for later include the amazing oxtail stew with potatoes and the delicious tomato oxtail soup.

Recipe Card: Keto Oxtail Soup

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