Cook spinach in its own juices (preferably in double boiler).
Place the mold in a double boiler so that it will be cooked by steam.
Then add the raisins and pour into a double boiler and steam four hours.
Cereals may be cooked in a double boiler or a fireless cooker.
Heat the milk in the double boiler with the celery and onion.
Put this mixture through a strainer into the double boiler,124 and reheat it.
By heating milk in a double boiler, these dangers are avoided.
Put the water and butter into a double boiler and set on the range.
Put mushrooms in saucepan or double boiler with salt and no water.
Cook the milk and farina in a double boiler for twenty to thirty minutes.