I'm pretty sure I read that passion fruit is a good fruit to have due to the lower sugar content. I've been using them to sweeten my porridge. Yum.
About 11% according to Wikipedia
https://www.google.com.au/search?q=sugar+content+in+passion+fruit&ie=utf-8&oe=utf-8&gws_rd=cr&ei=NOelVt3iJqHKmAXyoIXABQ
JohnN
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