Granny smith apples
And cranberry extract is my fruit diet.
ALWAYS eat the fruits alone. They are processed faster in the digestive track and they will carry along undigested food if you do not eat them alone.
However, lemon can be used along with extra virgin olive oil (excellent salad dressing) 1/2 of each with herbs and garlic.
THis wil l actually work like a small Liver Flush
(gallbladder fl.) so actually the oil will help more bile out of the gallbladder = extra digestive power.