Step 1Remove stem end of beans. Rinse under running water. Heat water in steamer until steaming. Add beans in even layer in bottom of steamer. Steam beans until tender yet crunchy and bright green, 7 to 10 minutes. Remove beans from steamer and add to bowl of ice water to shock. Drain and pat dry.
Step 2Combine shallot, olive oil, 1 tablespoon water and rice vinegar, salt and pepper to taste. Add to beans and toss well to coat. Arrange beans on serving platter. Sprinkle over coarse salt, then parsley and dill.