Asparagus: Boil 20 to 30 minutes.
Beets: Boil from 1 to 2 hours before peeling.
Green Corn: Steam 10 to 15 minutes, or boil 5 to 6 minutes.
Green Peas: Boil in as little water as possible 30 to 45 minutes.
Onions: Boil 45 to 60 minutes.
Parsnips: Boil from 30 to 50 minutes.
Potatoes: Boil 25 to 40 minutes.
Shell Beans: Boil 30 to 60 minutes.
Spinach: Boil 20 to 30 minutes.
String Beans: Boil 1 to 1 1/2 hours.
Turnips: Boil from 40 to 60 minutes.
The New Dr. Price Cookbook (1921).