A person who drinks wine recites the Beracha of "Boreh Peri Ha’gefen" before drinking, and if he drinks the quantity of a Rebi’it all at once, then he recites after drinking the Beracha of "Al Ha’gefen Ve’al Peri Ha’gefen." Of course, if one drinks during a meal requiring Birkat Ha’mazon, then the wine is covered by Birkat Ha’mazon and he does not recite a separate Beracha Aharona over the wine. But if one drinks outside the context of a meal, and he drinks a Rebi’it all at once, he must recite the Beracha of "Al Ha’gefen." This Beracha is also required if one recites Birkat Ha’mazon over a cup of wine and then drinks after Birkat Ha’mazon. Similarly, at the Seder, we drink two cups of wine after Birkat Ha’mazon, after which we recite the Beracha of "Al Ha’gefen."
Many of the wines we drink today are produced in Israel and then exported to the Diaspora. It is important to know where the wine one drinks has been produced because a special text is recited if the wine was produced in Israel. If one drinks wine that was produced outside Israel, he concludes the Beracha with the generic phrase, "Al Ha’aretz Ve’al Peri Ha’gefen" – "for the land and for the fruit of the vine." If the wine was produced in Israel, however, one concludes the Beracha with a more specific phrase: "Al Ha’aretz Ve’al Peri Gafnah" – "for the land and for the fruit of ITS vines." As mentioned, many of our wines originate in Israel, and one must therefore be cognizant of where the wine has been produced so he can ensure to recite the proper text of the Beracha Aharona.
This is the ruling of Hacham Ovadia Yosef, in Hazon Ovadia – Hilchot Berachot (p. 195).
Summary: If one drinks wine that was produced outside Israel, he concludes the Beracha Aharona after drinking with the phrase, "Al Ha’aretz Ve’al Peri Ha’gefen," whereas if the wine was produced in Israel, one concludes the Beracha with the phrase, "Al Ha’aretz Ve’al Peri Gafnah."
