Abstract Classes And Access Modifiers

I'm having difficulty understanding this small piece of code:

package food;
public abstract class Fruit {
private String color;
private String tasteType;
public void setColor(String color) {
this.color = color;
}
public abstract void setTasteType(String taste);
}

The above is an abstract class which describes the basic structure that every fruit should "extend".

The below is a concrete subclass of the Fruit class called Apple.

import food.Fruit;
class Apple extends Fruit {
public void setTasteType(String taste) {
tasteType = taste;
}
}

Also do note that the two pieces of code are in different packages!

Upon compiling the Apple class I get the following error:
Apple.java:4: error: tasteType has private access in Fruit
tasteType = taste;
^

What I don't understand is this: I've given a non-abstract implementation to the "setTasteType" method in the Apple class and clearly setTasteType should have the authority to modify the private instance variables of Fruit. But it turns out I'm wrong.