Why? Use a thermometer; how to test oven temperature without a thermometer
Posted: February 23rd, 2012 - 10:26pm
For some reason food.com ran this suggestion last year on checking over temperature without a thermometer, and it showed up on the inter-tubes today.
aluminum foil (optional)
1 To test if your oven is running cold:.
2 Preheat oven to 375°. (186° C.).
3 Place a small amount of granulated sugar in an oven-proof dish or on a cookie sheet lined with aluminum foil.
4 Place in oven for 15 minutes.
5 I f your oven is calibrated correctly, the sugar will melt.
6 If your oven is running cold, the sugar will not melt.
7 To test if your oven is running hot:.
8 Preheat oven to 350°. (177° C.).
9 Follow the same procedure as above.
10 If your oven is calibrated correctly, the sugar will not melt (although it may brown a little).
11 I f your oven is running hot, the sugar will melt.
12 Note: ovens do not maintain a constant temperature, but cycle above and below it, so it is possible that the sugar may melt at 350° if your oven is correctly calibrated but has an extreme cycle (15° F, 8° C.).
Use a thermometer.