Heat the 1 tablespoon of olive oil in a pressure cooker. Add the shallot and cook over moderate heat, stirring, until softened, 4 minutes. Add the pine nuts and tomato paste and cook, stirring, for 2 minutes. Add the wine and boil until reduced to 2 tablespoons, 5 minutes. Add the broth. Cover and cook at 15 PSI (see Note) for 7 minutes. Place the pressure cooker in the sink and run cold water over the lid to depressurize it rapidly; remove the lid once it can be released without force.