Boil a medium sized pot of water over medium heat. When boiling, add the asparagus for 3 minutes. When time is up, immediately strain them and put them in an ice bath for cooling. Strain again before using in the salad.
Once the orzo is cooked, combine the orzo, arugula, red onion, pine nuts and cooled asparagus.
In a mason jar or salad dressing jar, combine all the ingredients for the salad dressing and mix. If you want this to be finer, you can put it all in a food processor. Pour the dressing over the pasta salad and toss.
To serve, top with the fresh lemon zest and sea salt and pepper to taste.