At one time, the number of good Italian restaurants in Park Slope could be counted on one hand. But as the neighborhood has boomed, so has the number of trattorias with Manhattan bona fides. Rob and Robin, in this week’s Openings, introduce one of them: Fifth Avenue’s Spirito, a product of the collaboration between the owner of Gnocco, the former co-owner of Gradisca, another friend, and the executive chef of Downtown Cipriani, Claudio Cristofoli. A look at the menu, just added to our database, reveals a tweaked traditional roundup of classic Italian dishes, including proscuitto di Parma with mango subbing in for melon, and oven-roasted veal cheeks served with risotto. There’s also a pretty extensive selection of antipasti and specials every night of the week.