Pour 16 cups of water into a pot, squeeze in the juice of half a lime, and then put both lime halves in the pot, add the salt and peppercorns and bring to a boil. Add the shrimp, cover the pot, and remove from the heat. Let stand for 5 minutes or until the shrimp turn pink. Using a slotted spoon, immediately transfer the shrimp to a sieve and run under cold water for 45 seconds to stop the cooking.
If you’re using rice noodles, boil a pot of water, turn off the heat and add the noodles, giving them a quick stir. Let sit for 7 to 10 minutes, then drain and rinse under cold water.
To make the vinaigrette, whisk together the oil, lime juice, rice vinegar, honey, garlic, salt and pepper.
In a large bowl, toss together the shrimp, radishes, cucumber, snap peas, cantaloupe, red onion and noodles. Pour the vinaigrette overtop and toss to coat.
Top with avocado, fresh herbs and poppy seeds. Give it all another gentle toss to incorporate the toppings. It’s best to enjoy this recipe right away.