Lanie says 12 Apr 2012 at 11:09 pm malic acid in apples breakdown the oxalic acids in greens.. so its a good idea to add 1 apple to your green smoothies.. however, spinach and other dark greens should at least be slightly cooked or have to be mixed with more fruits.. as spinach and dark greens have too much oxalic acid/oxalates.. follow the Gerson Green Juice recipe for better results (however thi