Nutritive Qualities
Leaves are eaten as salad greens or cooked like spinach. This is one of the species used in Chinese cuisine as kŭcài (菜; lit. bitter vegetable). Blanching or boiling removes bitter flavour.
Nutritional analysis reveals 30 – 40 mg of vitamin C per 100g, 1.2% protein, 0.3% fat, 2.4% carbohydrate. Leaf dry weight analysis per 100g (likely to vary with growing conditions) shows: 45g Carbohydrate, 28g protein, 22g ash, 5.9g fibre, 4.5g fat; in all, providing 265 calories.
Minerals
Calcium: 1500 mg
Phosphorus: 500 mg
Iron: 45.6 mg
Magnesium: 0 mg
Sodium: 0 mg
Potassium: 0 mg
Zinc: 0 mg;
Vitamins
A: 35 mg
Thiamine (B1): 1.5 mg
Riboflavin (B2): 5 mg
Niacin: 5 mg
B6: 0 mg
C: 60 mg
Read more about this topic: Sonchus Oleraceus
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