Prepare the Salad Dressing: Make the dressing by combining 2 tablespoons champagne vinegar, 1 egg yolk, ½ teaspoon mustard, ½ teaspoon crushed garlic, and a pinch of salt and pepper in a bowl. Mix until well combined, then slowly drizzle in the ⅓ cup oil while whisking rapidly to emulsify. The dressing should look creamy, the oil and vinegar should not separate. Check for seasoning and adjust if needed. Keep refrigerated until ready to serve.
Prepare the Salad: Pick through the 8 ounces of lump crab to check for shells.
Peel all the citrus fruit, then pull apart the segments. Check for seeds and remove if needed.
Fill a large bowl with cold water. Cut the pomegranate into quarters and submerge them in the bowl. Separate the seeds from the flesh, working under water so the juice doesn’t stain anything. Reserve the seeds, you need half a cup for this recipe.
Pit and slice 1 avocado. Thinly slice ¼ cup of green onions, pick ¼ cup parsley leaves, and wash and dry 4 ounces of arugula.
Combine the citrus segments, pomegranate arils, arugula, green onions, parsley and ½ cup chickpeas in a bowl. Season with salt and pepper and toss with the dressing. Divide between the plates and garnish the top with crab and avocado.