For fan forced ovens or convection ovens the heat is forced through the oven by a large fan so the temperature should be even throughout the oven and any shelf should be suitable.
Fan oven for baking cakes.
Do not preheat for any meat or poultry.
Convection ovens are different from conventional ovens because they have a fan installed inside that circulates hot air evenly throughout the oven browning food much better and faster.
As a general rule you would need to drop the temperature by 15 20 degrees so 160c conventional would become 140 fan.
Preheat the oven to about 25 degrees fahrenheit cooler than the temperature indicated in your biscuit or cookie recipe.
Refer to your oven manufacturer s instructions booklet for the best advice in terms of converting baking times.
Therefore the general opinion of many who have had baking experience with the oven is that convection setting is much better for baking cookies pies and small pastries than cakes.
When baking a cake once you re at the desired temperature keep your oven on the bottom element only or on one of the fan assisted options never the grill.
Usually you need to reduce the oven temperature by 20c about 50f as the constant heat and force of the fan causes cakes to bake more quickly.
Unlike an ordinary oven your fan oven does not always need preheating.
Do preheat for bread scones and yorkshire puddings.
Push the button to activate the oven fan if applicable.
Fan ovens bake quicker because they generate a more even heat throughout the oven.
The information should be in the oven handbook.
However the baking time will be sorter so you need to start checking the cakes after about 13 minutes cooking time.
The general rule for using the fan is to set the oven temperature 25 degrees f 15 c lower than what the recipe calls for using in a regular oven.
If you bake using a fan assisted oven be aware that these ovens cook things faster.
When using the fan assisted options set the oven to 20 c less than the recipe states as fan assist cooks quicker and is a dryer heat.
Even then don t go strictly by cooking time as ovens vary.
If you preheat you risk overcooking.
The key thing that you need to understand is that it bakes at 25 degrees hotter than normal ovens.
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As a general rule of thumb if you ve misplaced those instructions you can knock the temperature down by 10 per cent to reduce the temperature a little.
Rather be sure to check on your food regularly to see how fast it is cooking.
Do not preheat for cakes or pastry.