- Green beans
- Wax beans
- Blackberries
- Blueberries
- Carrots
- Celery
- Coffee (roasted)
- Concord grapes
- Red currants
- Dandelion greens
- Endive
- Gooseberries
- Lemon peel
- Okra
- Green onions
- Oranges and orange peel
- Green peppers
- Black raspberries
- Strawberries
- Sweet potatoes
- Mobley (Feb 1999) Hospital Medicine, p. 21-38