The table below should be used as an approximate guide to the nutrient content of the vegetables. The values presented are averages of a number of different tests. Nutrient content can vary depending on soil type, season, geography, weather, method of preparation, method of analysis, and different varieties of the same vegetable. The data are presented for a typical portion size - usually 28 grams, or one ounce, but may vary depending on the vegetable. The information comes from several different sources including:
- Ethnic Foods Nutrient Composition Guide. Four Winds Food Specialists, Sunnyvale, CA. 2001
- Composition of Foods. USDA. 2001. www.nal.usda.gov/fnic/cgi-bin/list_nut.pl
- Chinese Vegetarian Dishes. Highlight Culinary series.