Ovens differ in size and make, and heat differently. Their habits vary and their whims and fancies have to be studied individually.
Mr. Kirkland, our leading bakery expert, says: ‘Even steam-pipe ovens bake cakes at varying temperatures: while 380°F. may be considered a sound hot oven in one case, another oven will not produce the same results until it is about 420°F.’
Therefore buy a set of thermometers and test your own oven, even if it be one with automatic control and a heat regulator.
Put in the oven thermometer when the oven is cold; when it registers 270°F. put in a piece of white note-paper: if it turns a golden brown in 7 minutes, make a note of the degrees registered on the thermometer and state the fact that in your oven these degrees (and the corresponding number on your heat regulator) indicate a ‘slow’ oven, and so forth as above.