Dragon fruit juice

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Ask.com says we should be eating about 9 – 10 servings every day. How much is that? They suggest typical serving sizes as:
• one banana
• six strawberries
• one apple
• one peach
• one-half cup of orange or other fruit juice
• fifteen grapes
• five broccoli florets
• one Roma tomato
• half of a baked sweet potato
• one ear of corn
• four slices of an onion