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How much salt is in soup and how to control it?

4 min read

The World Health Organization (WHO) recommends an adult consume less than 2,000 mg of sodium per day, yet many popular soups pack a significant portion of this daily limit into a single bowl. This makes understanding how much salt is in soup crucial for managing overall dietary sodium.

Quick Summary

This article explores the substantial difference in sodium levels between canned and homemade soups. It details the average sodium content found in store-bought varieties, explains why manufacturers add so much salt, and provides a guide for home cooks to significantly reduce sodium without sacrificing flavor.

Key Points

  • Canned Soup is High in Sodium: A single can often contains over 1,400 mg of sodium, far exceeding daily recommendations.

  • Label Reading is Crucial: Always check the nutrition label for sodium content and note the true serving size, as 'low sodium' can still be high.

  • Homemade is the Healthiest Choice: Cooking your own soup gives you complete control over sodium levels and ingredient quality.

  • Flavor Alternatives Exist: Use herbs, spices, and fresh aromatics to build flavor without relying on salt.

  • Fixing Overly Salty Soup: Dilute with extra liquid, add starches like a potato, or balance with acid to reduce saltiness.

  • Excess Sodium is a Health Risk: High salt intake is linked to elevated blood pressure, which increases the risk of heart disease and stroke.

In This Article

The amount of salt in soup can vary dramatically depending on whether it comes from a can, a restaurant, or your own kitchen. Understanding these differences is the first step toward controlling your sodium intake and improving your diet.

The High Sodium Content of Canned Soups

For many, canned soup is a convenient meal option, but that convenience often comes with a very high price tag for your health. Manufacturers add large amounts of salt primarily as a preservative and flavor enhancer. On average, a single 1-cup serving of canned soup contains around 700 mg of sodium. However, since many cans contain two or more servings, finishing an entire can can mean consuming well over 1,400 mg of sodium in one sitting, which is a substantial portion of the recommended daily intake. Even products labeled 'reduced sodium' can still have over 1,000 mg per can, making label reading and portion awareness essential. Excessive sodium can lead to health issues such as high blood pressure, heart disease, and fluid retention.

Why Processed Soups are So Salty

The high salt content in commercially prepared foods is a result of several factors:

  • Flavor Enhancement: Salt makes ingredients taste more vibrant and masks the often bland taste of mass-produced, pre-cooked foods.
  • Preservation: Sodium is an effective, inexpensive preservative that extends a product's shelf life.
  • Consumer Preference: Over time, the average consumer's palate has become accustomed to heavily salted foods, so companies keep sodium levels high to meet these flavor expectations.

The Benefits of Homemade Soup

Making soup at home gives you complete control over the ingredients, especially the amount of sodium. You can create a flavorful, nutritious meal that is naturally lower in salt. While some cooks suggest adding about 1 teaspoon of salt per quart of liquid, your own preference and the saltiness of other ingredients will determine the final amount. Seasoning in stages and tasting as you go is key to achieving the perfect balance. Additionally, homemade soup avoids the potentially unhealthy additives like MSG found in some processed versions.

How to Create Flavor Without Excess Salt

There are numerous ways to build complex flavors in homemade soup without relying on heavy salting:

  • Herbs and Spices: Fresh or dried herbs like thyme, rosemary, bay leaves, and parsley add depth. Spices such as cumin, coriander, and smoked paprika can add a smoky, earthy flavor.
  • Aromatics: Sautéing onions, garlic, and celery creates a flavorful base. Leeks and shallots can also contribute a rich, savory taste.
  • Acids: A splash of lemon juice or vinegar at the end of cooking can brighten the flavors and cut through the richness, reducing the need for more salt.
  • Low-Sodium Broths: For those who don't make their stock from scratch, using low-sodium broth as a base is a simple way to control the salt content. Some brands, like Pacific Foods, offer options with significantly less sodium.

Canned vs. Homemade Soup: A Comparison of Sodium Content

Feature Canned Soup (Regular) Canned Soup (Low Sodium) Homemade Soup
Sodium per 1-Cup Serving 700-800 mg (often 1400+ per can) 100-400 mg Customizable, can be <100 mg
Primary Sodium Source Additives, preservatives, flavor enhancers Added salts and flavorings Natural ingredients, added salt
Ingredient Control Limited; includes processed ingredients Limited; some processing still occurs Complete control over all ingredients
Best for Diets High-risk for exceeding daily sodium limits A better option, but requires label scrutiny The ideal choice for sodium control
Flavor Profile Often one-dimensional, salty flavor Can be less flavorful without additional seasoning Rich, complex, and customizable flavors
Health Impact Associated with high blood pressure risk Lowered risk compared to regular varieties Healthiest option for controlling sodium intake

Practical Ways to Reduce Salt When Cooking

If you find your homemade soup is too salty, there are simple fixes:

  • Dilute It: Add more liquid, such as unsalted broth, water, or milk, to increase the volume and reduce the salt concentration. This is the simplest and most effective method.
  • Add Starch: Adding a raw, peeled potato to the pot can absorb some of the excess salt. Simmer for 15-20 minutes, then remove the potato before serving. Cooked pasta or rice can also help absorb excess saltiness.
  • Incorporate Acidity: A squeeze of lemon juice or a splash of vinegar can balance the flavor, making it seem less salty. The acid brightens the dish and counters the salt's effects.

Conclusion

When you ask how much salt is in soup, the answer depends heavily on its origin. While convenient, canned soups are consistently high in sodium and pose a risk to cardiovascular health. Making soup at home is the most reliable way to control your salt intake, allowing you to create a delicious and healthy meal tailored to your needs. By focusing on natural flavors from herbs, spices, and fresh vegetables, you can create a satisfying soup that benefits your taste buds and your well-being. For those with high blood pressure or other salt-sensitive conditions, cooking at home is an imperative, not just an option. For more in-depth information on dietary sodium, consider consulting resources from trusted health organizations like the American Medical Association.

Frequently Asked Questions

The World Health Organization recommends adults consume less than 2,000 mg of sodium per day, while the American Heart Association suggests an ideal limit closer to 1,500 mg, especially for those at risk of heart disease.

Manufacturers add salt to canned soups primarily as a preservative to extend shelf life and as a flavor enhancer to improve the taste of processed ingredients.

You can dilute the soup by adding more unsalted liquid (like water or low-sodium broth), add a raw, peeled potato to absorb some salt during simmering, or introduce an acidic element like lemon juice or vinegar to balance the flavor.

Reduced sodium soups are generally better than regular versions but can still contain a significant amount of salt. Always check the label, as some can have over 1,000 mg per can, making portion size important.

To add flavor without salt, use herbs (thyme, rosemary, bay leaves), spices (cumin, paprika), aromatics (garlic, onions), and a final dash of acid from lemon juice or vinegar.

Cooking at home gives you complete control over how much salt is added. By using fresh, whole ingredients and low-sodium bases, you can make a delicious and healthy soup that is much lower in sodium than store-bought options.

Consuming excessive salt can lead to high blood pressure, which increases the risk of heart attacks, strokes, and kidney disease. It can also cause fluid retention, leading to bloating and swelling.

References

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.