Traditionally hostesses who are engaged in conservation and do many preparations for the winter, sterilize glass jars with preparations in the boiling water. It isn't absolutely convenient at large volumes of conservation.
Advantages of sterilization of roll-in in an oven
Tanks (pans, basins) of the necessary volume that water reached scars of cans are necessary for sterilization of roll-in in water. Depending on the volume of cans, these tanks have to be different height. Water in different pans and consequently, it is difficult to control intensity of boiling begins to boil. And in one pan, even with the widest bottom, it is possible to install no more than four one-liter jars at the same time.
Easier and convenient way of sterilization of roll-in is the method of warming up of cans in an oven. In an oven it is at the same time possible to install more than 10 cans. Temperature there constant. Nothing boils away and on a plate is splashed out. As a result in kitchen there is no steam, the dampness because of the increased humidity isn't formed.
However, if to sterilize the jars in an oven not by rules, juice can flow out from cans. And the lack of juice in rolled up bank will lead to a lack of preservative. Therefore, banks will blow up, and labor can be lost.
How to sterilize roll-in in an oven
In order that it didn't happen, the prepared banks with preparations establish in a cold oven. It has to get warm gradually together with banks and their contents before sterilization process begins. The oven joins on temperature +120 … 150 °C. If temperature is less than hundred, sterilization won't happen. If temperature rises higher than hundred fifty, contents of cans will boil also juice to pour out. It isn't necessary to cover with covers banks in an oven. First, covers will interfere with process. Secondly, through them a part of juice with preservative will pour out too. When the oven gets warm to the lower mark of the necessary temperature, it should be noted time. The jars in an oven are sterilized pretty fast. If to hold their excess time, not canned food, but stewed vegetables will turn out. For cans with a capacity of 500 ml 10 minutes of sterilization there are enough. The jars capacity liter are sterilized by 15 minutes from the moment of achievement of temperature of +120 °C. 2-liter jars are sterilized, respectively, 20 minutes. Three-liter – 25 minutes. If you have a roll-in in banks of the different sizes, it is better to sterilize in the portions: at first small, then - large. But it is possible to put and all together, only to get them after time serially, having begun with small, and big to continue to sterilize. While there takes place sterilization process, it is necessary to prepare covers. They will be sterilized 5 minutes in the boiling water. After time left, banks serially get from the switched-off oven, close covers, overturn, cover with a thick cover and leave so before cooling.