Vaccinium myrtillus (aka real blueberries)

https://www.ncbi.nlm.nih.gov/books/NBK92770/

I found wildcrafted 100% juice/muttersaft(though pasteurized) in my health food store. So delicious unbelievable...
If you are near germany get some ;)

http://shop.voelkeljuice.de/voelkel-heidelbeer-pur-0-33l-0-15-eur-pfand

Really good for heart apparently, reducing vessel permeability and BBB permeability, lots of other good things. Tweet