Cold Tomato Soup

This cold tomato soup is so refreshing and ridiculously easy to make. Prep time is just 15 minutes, and then it needs to chill in the fridge.

You can serve it as a tasty appetizer, but a bowl of it also works well as a light summertime lunch.

This refreshing soup is so good. It's wonderfully creamy. It has a mild sweetness from the tomatoes and a slight tang from the buttermilk, and the basil greatly enhances it.

Unlike the Spanish gazpacho, this cold tomato soup has more of an Italian flavor profile. It is smoother and creamier. Both are very good, but this one is easier to make.

Ingredients

You'll only need a few simple ingredients to make this tasty soup. The exact measurements are included in the recipe card below. Here's an overview of what you'll need:

Fresh basil: The basil is a really important ingredient in this soup so you really shouldn't skip it.

Minced garlic: It's best to use freshly minced garlic in this recipe rather than jarred minced garlic.

Extra virgin olive oil: My favorite oil! It's so flavorful. Definitely use high-quality oil here - it makes a difference.

Canned tomatoes: The brands I recommend are either Pomi strained tomatoes or Cento canned tomato puree.

Buttermilk: Full-fat or low-fat, both work. Low-fat is easier to find in supermarkets, so that's what I tend to use.

Kosher salt and black pepper: If using fine salt, you should reduce the amount you use, or the soup could end up too salty.

Instructions

Making this cold tomato soup is so easy! The food processor does all the work. Scroll down to the recipe card for detailed instructions. Here are the basic steps:

You start by placing basil, garlic, and olive oil in your food processor bowl. Process them into a paste.

Now, add the tomatoes, buttermilk, salt, and pepper. Process until smooth.

That's it! The soup is ready. All that's left to do is to chill it before serving.

Expert tip

One of the things that make this soup so easy is that it's made with canned tomatoes.

I highly recommend that you use the brand I linked to below in the recipe card - Pomi tomatoes. This is an Italian brand and it's notably sweeter and milder than local canned tomatoes, which tend to have an acidic aftertaste.

You can find Pomi tomatoes on Amazon, at Whole Foods, and in a growing number of supermarkets around the country.

Another good Italian brand that's easier to find in supermarkets is Cento - you can use their tomato puree in this recipe.

If you end up using an American brand, taste the soup and see if the acidity of the tomatoes needs to be balanced out with a sweetener.

Frequently asked questions

Variations

I love this recipe as is and almost always make it as written. But in case you'd like to vary the basic recipe, here are a few ideas for you:

• You can use heavy cream instead of buttermilk. I do like the texture and tang that buttermilk adds, though. But heavy cream is an option.
• Another option is to use canned coconut milk. It will change the flavor profile, but it should work in terms of texture. If you go this route, make sure to use full-fat coconut milk and stir the milk well before using it.
• Add spices such as paprika, ground cumin, and cayenne.

Serving suggestions

This soup is excellent on its own as a first course. When I want to serve it as a main course, I like to serve it alongside any of the following:

• Cheese muffins
• Almond flour biscuits
• Parmesan crisps
• Thick, buttered slices of almond flour bread

Storing leftovers

You can keep the leftovers in the fridge, in an airtight container, for up to 4 days. Make sure to stir them well before serving them. I don't recommend freezing this soup.

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Recipe card

4.95 from 56 votes

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Cold Tomato Soup

This cold tomato soup is so refreshing and ridiculously easy to make. Serve it as an appetizer, or as a tasty summertime lunch.

Prep Time15 mins

Rest time2 hrs

Total Time2 hrs 15 mins

Course: Soup

Cuisine: Italian

Servings: 4 servings

Calories: 142kcal

Author: Vered DeLeeuw

INGREDIENTS

• ▢ ½ cup fresh basil leaves (packed, 20 grams)
• ▢ 1 tablespoon minced fresh garlic
• ▢ 2 tablespoons extra virgin olive oil
• ▢ 3 cups Pomi strained tomatoes or canned tomato puree
• ▢ 1 cup low fat buttermilk
• ▢ 1 teaspoon Diamond Crystal kosher salt 0r ½ teaspoon sea salt
• ▢ ¼ teaspoon freshly ground black pepper

INSTRUCTIONS

• Place the basil, garlic, and olive oil in your food processor bowl. Process into a paste.
• Add the tomatoes, buttermilk, salt, and pepper. Process until smooth and well incorporated, about 1 minute, stopping if needed to scrape the sides of the bowl with a spatula.
• Transfer the soup to a serving bowl, cover, and chill in the fridge for 2 hours before serving.

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NOTES

I highly recommend using either Pomi Strained Tomatoes or Cento tomato puree. If you use an American brand instead, taste the soup and see if you'd like to add a teaspoon of honey to counteract their acidity.

If the tomatoes you use have no salt added, I recommend using 2 teaspoons of kosher salt or 1 teaspoon fine salt.

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DISCLAIMERSMost of our recipes are low-carb (or keto) and gluten-free, but some are not. Please verify that a recipe fits your needs before using it. Recommended and linked products are not guaranteed to be gluten-free. Nutrition info is approximate and the carb count excludes non-nutritive sweeteners. Nutrition info may contain errors, so please verify it independently. Recipes may contain errors, so please use your common sense when following them. Please read our Terms of Use carefully before using any of our recipes.

NUTRITION PER SERVING

Serving: 1cup | Calories: 142kcal | Carbohydrates: 15g | Protein: 4g | Fat: 7g | Saturated Fat: 1g | Sodium: 645mg | Fiber: 3g | Sugar: 3g

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