Skip to content

How much protein is in 100g cooked lentils? A complete nutritional guide

4 min read

According to USDA data, a 100g serving of cooked lentils contains approximately 9.02 grams of protein. This makes lentils a highly nutritious and affordable source of plant-based protein for a variety of diets, from vegan and vegetarian to those looking to reduce meat consumption.

Quick Summary

A 100g serving of cooked lentils contains around 9 grams of protein, a significant amount for a plant-based food. The article details the full nutritional profile, explains why the protein content differs from raw lentils, and offers tips for maximizing the benefits of this versatile legume. Cooking methods do not diminish protein content, but cooking makes the protein more bioavailable.

Key Points

  • Core Protein Value: 100g of cooked lentils contains approximately 9 grams of protein.

  • Raw vs. Cooked: Raw lentils have more protein by weight because they are dehydrated; the cooking process adds water, distributing the total protein over a larger volume.

  • Rich in Fiber: Lentils are an excellent source of dietary fiber, with nearly 8 grams per 100g serving, aiding digestion and satiety.

  • Micronutrient Powerhouse: Beyond protein, cooked lentils provide high levels of folate, iron, magnesium, and other vital vitamins and minerals.

  • Complementary Protein: Pairing lentils with whole grains like rice or quinoa creates a complete protein profile, providing all essential amino acids.

  • Enhanced Digestibility: Soaking and cooking lentils properly helps reduce anti-nutrients, improving both digestibility and nutrient absorption.

  • Versatile Ingredient: Different lentil types offer varying textures, making them suitable for soups, salads, curries, and vegan burger patties.

In This Article

Understanding the Protein Content of Cooked Lentils

The protein content in 100g of cooked lentils, roughly half a cup, is approximately 9 grams. This is a very robust amount for a plant-based food and demonstrates why lentils are a staple in many diets globally. The exact figure can vary slightly based on the lentil type (e.g., brown, green, red) and the preparation method, but 9 grams is a reliable average for cooked, unseasoned lentils.

The Nutritional Profile Beyond Protein

While the protein content is a major draw, cooked lentils offer a host of other valuable nutrients. A typical 100g serving provides:

  • Calories: Around 116 kcal, providing a good source of energy.
  • Fiber: Nearly 8 grams of dietary fiber, which is crucial for digestive health and helps you feel full.
  • Carbohydrates: Approximately 20 grams, with a low glycemic index, making them excellent for sustained energy.
  • Micronutrients: Lentils are packed with essential minerals and vitamins, including iron, folate, potassium, and magnesium. Folate, a B-vitamin, is particularly abundant, with one cup of cooked lentils providing almost 90% of the daily recommended amount.

Why Cooked Lentils Have Less Protein by Weight than Raw Lentils

One common point of confusion arises when comparing the protein content of raw versus cooked lentils. Raw lentils contain a much higher protein percentage per 100g, often cited as 24-26 grams. The key difference is the absorption of water during the cooking process. When lentils are cooked, they swell up significantly by absorbing water, which adds weight and volume but no additional nutrients. Therefore, 100g of raw, dehydrated lentils represents a much more concentrated amount of the legume than 100g of cooked, rehydrated lentils. The total amount of protein from a batch of lentils does not change, but it becomes distributed across a larger, heavier cooked volume.

Maximizing the Nutritional Benefits of Cooked Lentils

To get the most out of your lentils, consider pairing them strategically with other foods. While lentils are a fantastic source of protein, they are not a complete protein on their own, meaning they lack some essential amino acids. However, this is easily remedied by combining them with a complementary food. Here are some pairing suggestions:

  • Combine with whole grains: A classic combination is lentils with brown rice or quinoa. The amino acids missing from lentils are often found in whole grains, creating a complete protein.
  • Add vitamin C: For maximum iron absorption, pair your lentil dishes with a vitamin C-rich food like tomatoes, bell peppers, or a squeeze of lemon juice.
  • Enhance flavor: Cooking lentils with aromatic vegetables, herbs, and spices not only adds flavor but also increases their nutritional density.

Protein Comparison: Cooked Lentils vs. Other Foods

To put the protein content of cooked lentils into perspective, here is a comparison with other common protein sources, based on a 100g serving.

Food (100g, cooked) Protein (grams)
Cooked Lentils ~9.0
Cooked Chicken Breast ~31.0
Cooked Quinoa ~4.4
Cooked Chickpeas ~8.9
Tofu ~10.0
Cooked Black Beans ~8.9

As the table shows, cooked lentils hold their own against other plant-based options like quinoa and chickpeas, offering a competitive amount of protein. While not as protein-dense as chicken breast, their affordability, fiber content, and versatility make them a superior and sustainable choice for a balanced diet.

Culinary Versatility of Lentils

Lentils are incredibly versatile and can be used in a wide range of dishes. Unlike many other legumes, they cook relatively quickly without needing a long soaking period. Their texture can range from firm and hearty, like with green or black lentils, to soft and creamy, which is characteristic of red lentils.

Common Uses for Lentils:

  • Soups and Stews: Red lentils are perfect for thick, creamy soups and stews as they break down easily during cooking.
  • Salads: Firm-textured lentils, such as green or Puy lentils, hold their shape well and are ideal for adding a hearty element to salads.
  • Curries and Dal: In Indian and Middle Eastern cuisine, lentils (or 'dal') are a cornerstone, providing a rich, earthy flavor.
  • Burgers and Loaves: Their ability to bind and their firm texture once cooked makes them a great base for vegetarian burgers or meatless loaves.

Conclusion: The Plant-Powered Potential of Lentils

Ultimately, a 100g serving of cooked lentils delivers a valuable nutritional punch, providing approximately 9 grams of protein, a substantial amount of fiber, and a wide array of essential micronutrients. This affordable and versatile legume serves as a cornerstone of healthy eating, particularly for those following plant-based diets. By understanding how water absorption affects their nutritional density and pairing them with complementary foods, you can easily harness the plant-powered potential of lentils to support muscle growth, promote digestive health, and contribute to a more balanced and sustainable diet. Incorporating this simple staple into your meal plan is an easy way to boost your protein and nutrient intake, making every meal more wholesome.

Cooking Lighter Lentils

For those seeking a more digestible lentil experience, especially concerning phytic acid content which can inhibit mineral absorption, proper preparation is key. While cooking itself significantly reduces anti-nutrients, soaking lentils beforehand can further enhance their digestibility and mineral bioavailability. Sprouting lentils is another effective technique for improving their nutritional profile.

Quick Tips for Better Digestibility

  • Rinse Thoroughly: Always rinse lentils before cooking to remove any dirt or debris.
  • Soak Briefly: Even a 30-minute soak can help with the cooking process and digestibility, though it's not strictly necessary for most varieties.
  • Use Fresh Water: Always cook lentils in fresh water rather than the soaking water to ensure better flavor and reduced anti-nutrient content.

Outbound Link

For more information on the nutritional science behind pulses, consider visiting the Alberta Pulse Growers website.

Authoritative Sources

This article is based on information from reliable nutritional databases and health organizations, including the USDA and reputable health websites, ensuring accuracy and credibility. The data on protein content, fiber, and vitamins comes from widely accepted food composition tables.

Frequently Asked Questions

Raw, uncooked lentils have a higher protein concentration per 100g because they are dehydrated. The protein itself is not lost during cooking; it is simply spread out over a larger mass and volume as the lentils absorb water.

Lentils are not a complete protein on their own, as they are low in certain essential amino acids. However, by combining them with a complete protein source like whole grains, you can create a complete protein meal.

Cooking lentils by boiling or simmering is an effective way to make their nutrients, particularly protein, more bioavailable. Using fresh water for cooking, rather than soaking water, also helps improve the final nutritional profile.

Protein content can vary slightly among lentil types. On average, brown and green lentils, when cooked, typically contain around 8-9 grams of protein per 100g, while red lentils may vary. The difference is generally minor for cooked lentils.

Yes, lentils are very nutrient-dense. Besides protein, they are an excellent source of dietary fiber, complex carbohydrates, iron, folate, potassium, and magnesium.

No, it is not recommended to eat raw lentils. Raw lentils contain anti-nutrients like phytic acid and can be difficult to digest. Cooking them makes the nutrients much more bioavailable and is necessary to make them safe and palatable.

A 100g serving of cooked lentils contains a substantial amount of dietary fiber, approximately 7.9 grams, which is beneficial for digestive health.

Medical Disclaimer

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