You should always preheat equipment such as ovens and fryers so that they are cooking at the correct temperature when the food is placed in it. This will ensure proper even cooking of the food.
If you are using an electric stove, you may want to preheat your pans because it takes so long for electric heating elements to come to temperature, compared to gas burners. If your recipe says to cooks at medium for 15 minutes, you won't be at "medium" on an electric stove for several of those 15 minutes unless you preheat.
so that your food doesn't get burnt
If you don't preheat the oven, the oven never gets hot, which (at least in my experience) is the purpose of having an oven.
So that the food you put into the oven starts cooking straight away
by wiping a damp washcloth
the life
yes
Make sure you preheat the oven to the degree that you want it at. Then, make sure that you don't take out the meatloaf before everything has been thoroughly cooked. You have to leave the meatloaf in the oven and don't take it out before it isn't finished cooking.
Pre- means before, so it heats before you use it.
To prevent bacteria causing disease in foods cleanliness and hygiene is important. Washing the food material before cooking is one example. In case of milk, pasteurization is important. Handling food before cooking and after cooking with clean or gloved hands is another example.
4MM..
If it does not function correctly, you will know and remedy the fault before it is actually needed.
In the 20th century, standardization of cooking equipment happened. Before then, most equipment was pretty much what you had and you adapted. The 1.7 size will feed a family of 4-6 with no waste. Larger families had a bigger kettle. It has always been a case of cooking what is necessary for the number of people to be fed.
For some foods, you need a "warmed pan". But, for most cooking, it doesn't matter what the pan's temperature is when you start.
because i can cause cross continmation
Dredging, breading or coating are terms for flouring meats before cooking.