To prepare cabbage & filling: Combine water, rice and 1 teaspoon oil in a medium saucepan; bring to a boil. Reduce heat to maintain the barest simmer, cover and cook until the water is absorbed and the rice is just tender, 40 to 50 minutes. Transfer to a large bowl and set aside.

Meanwhile, half fill a large pot with water and bring to a boil. Line a baking sheet with a clean kitchen towel and place near the stove.

Using a small, sharp knife, remove the core from the bottom of the cabbage. Add the cabbage to the boiling water and cook for 5 minutes. As the leaves soften, use tongs to gently remove 8 large outer leaves. Transfer the leaves to the baking sheet and pat with more towels to thoroughly dry. Set aside.

Drain the remaining cabbage in a colander for a few minutes. Finely chop enough to get about 3 cups. (Save any remaining cabbage for another use.)

Heat 1 1/2 tablespoons oil in a large skillet over medium-high heat. Add mushrooms, onion, garlic, sage, rosemary and 1/4 teaspoon each salt and pepper; cook, stirring, until the mushrooms have released their juices and the pan is fairly dry, 8 to 10 minutes. Add wine and cook, stirring, until evaporated, about 3 minutes more. Add the mixture to the cooked rice along with currants and pine nuts.

Heat the remaining 1/2 tablespoon oil in the skillet over medium-high. Add the chopped cabbage, the remaining 1/4 teaspoon salt and 1/8 teaspoon pepper; cook, stirring, until the cabbage is wilted and just beginning to brown, 3 to 5 minutes. Add to the rice mixture.

To prepare sauce: Heat 1 tablespoon oil in a large skillet over medium heat. Add onion, garlic, salt and pepper and cook, stirring, until starting to soften, 2 to 4 minutes. Add tomatoes and wine; bring to a simmer and cook until slightly thickened, about 10 minutes.

Preheat oven to 375 degrees F.

To stuff cabbage: Place a reserved cabbage leaf on your work surface; cut out the thick stem in the center, keeping the leaf intact. Place about 3/4 cup filling in the center. Fold both sides over the filling and roll up. Repeat with the remaining 7 leaves and filling.

Spread 1 cup of the tomato sauce in a 9-by-13-inch baking dish. Place the stuffed cabbage rolls, seam side down, on the sauce. Pour the remaining sauce over the rolls and drizzle with the remaining 1 tablespoon oil.

Bake, uncovered, basting twice with the sauce, until hot, about 45 minutes.