When it comes to leafy greens, darker is better. They have the most nutrients. Case in point: Kale and spinach have over 10 times more immune-boosting vitamins A and C than iceberg lettuce.
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in Salads
When it comes to leafy greens, darker is better. They have the most nutrients. Case in point: Kale and spinach have over 10 times more immune-boosting vitamins A and C than iceberg lettuce.
source