Eh? Forgive my ignorance, but how then are 'good' coffee plants grown?
If you have a good coffee, the genes for that good coffee are within the plant itself. The seeds of that coffee plant have different genetic material and are not direct clones so will not grow the same coffee beans. In apples, the majority of these seeds lead to trees which grow awful apples. There is, of course, the chance that you'll get a winner (though probably can't give it the optimum conditions in which it will thrive). Grafting is how most of these types of plants are grown. This allows the fruiting section of the plant to be identical throughout your farm.
If you have a good coffee, the genes for that good coffee are within the plant itself. The seeds of that coffee plant have different genetic material and are not direct clones so will not grow the same coffee beans. In apples, the majority of these seeds lead to trees which grow awful apples. There is, of course, the chance that you'll get a winner (though probably can't give it the optimum conditions in which it will thrive). Grafting is how most of these types of plants are grown. This allows the fruiting section of the plant to be identical throughout your farm.