Shrimp Salad with Lemon Juice - shrimp

Ingredients

• 1/2 pound jumbo gulf shrimp (boiled with shells on in large pot of salty water for 45 seconds, then chilled in cold water. When chilled remove peel)
• 1/2 bunch celery, chopped against the grain.
• 1 large ripe tomato, seeded and diced into 2/3-inch cubes
• 1 large shallot, diced into 1/4-inch cubes
• 1/2 bunch cilantro leaves, roughly chopped
• Sea salt and freshly ground black pepper
• Olive oil
• 2 ripe lemons, juiced
• 1 ripe avocado diced into 1/2-inch cubes
• 1/2 can mandarin oranges