01 - Using a sharp knife, slice off the top and bottom of each orange and grapefruit. Following the curve of the fruit, cut away the peel and white pith. Cut the fruit into thin rounds or supreme into individual segments, collecting any juices.
02 - Halve the avocado lengthwise, remove the pit, and peel back the skin. Slice the flesh into thin, even wedges and set aside.
03 - Cut the red onion in half and slice it paper-thin into half-moons. Soak in ice water for 5 minutes if you prefer a milder bite, then drain.
04 - In a small bowl, whisk together the extra-virgin olive oil, fresh lemon juice, honey or maple syrup, and Dijon mustard until fully emulsified. Season with sea salt and freshly cracked black pepper to taste.
05 - Spread the mixed greens across a large serving platter, creating an even bed for layering.
06 - Artfully layer the citrus rounds and segments, avocado slices, and thinly sliced red onion over the bed of greens.
07 - Scatter the pomegranate arils and crumbled feta evenly over the assembled salad. Drizzle the dressing over the top just before serving. If desired, garnish with torn fresh mint leaves and chopped toasted pistachios or walnuts.