1. Poach the shrimp in boiling water for a few moments, just long enough for them to change colour; immediately run under cold water to stop the cooking; peel and devein;
2. in a bowl, vigorously whisk together the olive oil, lemon juice, parsley and garlic; season with salt and pepper; add the shrimp and combine well with the vinaigrette; marinate for 1 hour;

Presentation

1. place a ring in the center of each plate; place a strip of cucumber around the inner perimeter of the ring;
2. coarsely tear up the greens and place inside the ring;
3. remove the shrimp from the marinade; slice lengthwise and arrange in a wreath on top of the salad greens;
4. pour the marinade over top; garnish with the julienned tomatoes and serve cold.