Does Northern Liberties need another coffee shop? Not now it doesn’t. Beth and Oscar Acuna have just opened Arbol Cafe, where in addition to fair trade coffee, they’ve got a menu of traditional Paraguayan fare and healthy salads and sandwiches. Stop by the quaint spot and try a yerba mate or a mate dulce: a concoction made from sweetened coconut and steamed milks. Add a shot of espresso and you’ll actually look forward to getting out of bed in the a.m. Move on to toast slathered in orange or guava preserves imported from Paraguay. And if you’re truly hungry, try the Sandwich de Lomito: thin steak, egg, smoked turkey ham, romaine, tomato, and cheese on Le Bus bread. Your cup runneth over. Arbol Cafe, 209 Poplar Street (215-284-5788).