1. Bring the water to a bubbling boil over high heat in a large saucepan or soup pot.
2. Drop in the cubed eggplant, reduce the heat and simmer uncovered for 10 minutes, or until the eggplant offers only the slightest resistance when a cube is pierced with the tip of a sharp knife.
4. Mix the vinegar, garlic, basil, oregano, salt and pepper together in a large serving bowl, add the eggplant cubes and toss them gently until they are coated with vinegar and herbs.
5. Marinate in the refrigerator for about 1 hour. Just before serving, toss the eggplant with olive oil and sprinkle it with capers.