How long do I cook asparagus in a double boiler or percolator?
To steam asparagus in an upright position, fasten the stalks into a bundle using a band of foil or string. Stand the stalks upright in the double boiler or percolator with the tips extending an inch or more above the boiling, salted water. (A glass cooking vessel works best.) Cover and cook until tender, 5 to 8 minutes.
