Make lemon-basil oil:
Mix 1/3 cup olive oil, a strip of lemon zest, 8 torn basil leaves and a pinch of salt; infuse 2 hours. Soak 1/2 thinly sliced red onion in water for 10 minutes to mellow the bite. When ready to serve, toss 1 head chopped escarole, the onion slices, 2 sliced celery stalks, 3/4 cup chopped green olives and a few tablespoons olive juice, 2 segmented lemons and 1/4 cup each toasted pine nuts and golden raisins in a serving bowl. Discard the zest from the infused oil, drizzle over the salad and season with salt and pepper.