2 pounds ripe tomatoes, cored and roughly chopped (5 to 6 medium tomatoes)
1/2 medium cucumber, peeled and roughly chopped
1/2 medium red onion, roughly chopped
1 slice white or country bread, cut into 1/2-inch cubes
2 cloves garlic, chopped
1/2 cup olive oil
2 teaspoons rice wine vinegar
1/4 cup fish sauce
Salt and pepper
Add the tomatoes, cucumber, onion, bread, garlic, olive oil, vinegar, and fish sauce to a blender or food processor, and process until smooth. Season with salt and pepper, to taste.
Chill 30 minutes before serving.