One serving (approximately 1 cup cooked) of dal typically provides around 15-18 grams of protein, though this can vary slightly depending on the type of lentil used.
The protein content in dal comes primarily from the lentils themselves. Different types of lentils have slightly different protein densities. For example, masoor dal (red lentils) might have a slightly different protein content compared to toor dal (yellow split peas) or chana dal (split chickpeas).
To get a more precise estimate, it's best to check the nutritional information on the specific type of dal you are using. Look for the 'Protein' value listed per serving size. Keep in mind that the protein content is usually listed for the *cooked* dal, as the dry lentils will have a different concentration.
Also, the addition of other ingredients during cooking, such as vegetables or spices, will not significantly alter the protein content derived from the lentils themselves. However, adding ingredients like paneer or meat will, of course, increase the overall protein content of the dish.
To maximize protein absorption, consider pairing your dal with a whole grain like brown rice or quinoa. This provides a complete protein profile, as lentils are relatively low in the amino acid methionine, which is abundant in grains.