Lemons and oranges contain the most acid. Hope this helps!
Which Fruits Contain A Large Quantity Of Acid?
The major fruits are oranges, lemon and apples. These contain natural acids, such as citric acid in oranges and lemons and malic acid in apples.
I don't know about a lot of fruits with acid in them, but I'm sure you'll find tons of citric acid in lemons.
