The bright but bare-bones shop in the Ballpark neighborhood sells nothing but the South American pastries and a few packaged foods, like jars of chimichurri and bags of yerba mate tea, without the sandwiches, salads and tartas of the original. And while the shapes of Lazo’s empanadas are a little more uniform and the crimped edges less hand-formed than those at Rincon, the savory fillings and flaky crust are every bit as Argentinian as the original.