The blessing over the meal is immediately followed by another blessing over the wine:

בָּרוּךְ אַתָּה יְיָ, אֱלֹהֵינוּ מֶלֶךְ הָעוֹלָם
בּוֹרֵא פְּרִי הַגָּפֶן:   

Baruch Atah Adonai, Eloheinu Melech ha-olam,
borei p’ree hagafen.

We praise you, Adonai, our God, Ruler of the universe, 
who creates the fruit of the vine.

Drink the third glass of wine!


haggadah Section: Bareich
Source: JewishBoston.com