Celery, 20 to 30 minutes.
Spinach, 20 to 60 minutes or more.
Cauliflower, 20 to 40 minutes.
Summer squash, 20 to 60 minutes.
If vegetables after being cooked cannot be served at once, dish them up as soon as done, and place the dishes in a bain marie or in pans of hot water, where they will keep of even temperature, but not boil. Vegetables are never so good after standing, but they spoil less kept in this way than any other. The water in the pans should be of equal depth with the food in the dishes. Stewed vegetables and others prepared with a sauce, may, when cold, be reheated in a similar manner.
Bain Marie.
If salt is to be used to season, one third of a teaspoonful for each pint of cooked vegetables is an ample quantity.