Cut the ends off of the citrus fruit and cut away skin and pith from the sides. Working over a bowl, cut between the membranes to release the sections into the bowl. Drain juice from bowl and set aside.
Combine mint, lemon & lime juice, honey, cumin and coconut oil to make the dressing.
Place citrus wedges on a plate or shallow bowl, garnish with red onion slices and drizzle dressing over the salad.