Steps
1. Carefully chop the shucked oysters into small pieces and place in a chilled bowl.
2. Add the finely diced avocado and cucumber to the oysters.
3. In a small separate bowl, whisk together lemon juice, olive oil, chopped capers, and minced shallot.
4. Pour the dressing over the oyster mixture and gently combine.
5. Season with salt and black pepper to taste.
6. Gently spoon the tartare onto a serving dish or serve inside half oyster shells for presentation.
7. Garnish with fresh dill or chives before serving.
8. Serve immediately to enjoy the fresh flavors.