* Green beans should be sliced lengthwise (French Cut). ** Stock
is the water that the green beans were cooked in. (Not regular
++++++++++++++++++ Cook beans in boiling salted water until just tender. Reserve 1/4 cup of the cooking liquid and drain off the rest. Prepare sauce by combining vinegar, oil, reserved vegetable stock, onions, dill, and sugar; stir until blended. Pour mixture over beans; marinate several hours before serving.