Hello, I bought a house about a year ago and we have this nice big Apple tree in back. The attached photo is 3 Apples I just picked from the tree today. They have more of a tart taste. More "granny smith" then "red delicious". I live in Minneapolis, MN if that helps as well. thanks
Try showing six sample fruits with one cut in half to show its profile and flesh. If nobody has anything to offer on the internet maybe a fruit show is going to be held near you this fall, to which you can take your samples. Ones here have had identification tables in the past.