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Ziociro / Resources / Curing

Curing is the process by which your oven is gradually and uniformly dried out of the humidity that might have been accumulated in the oven during the building and assembly stages.
During the process of heating up, thermal expansion occurs, and to maintain the same rate of expansion and to prevent structural cracks, the materials need to be as dry as possible.
Small hairline cracks are normal and will not affect the performance of your oven, while larger, structural cracks could diminish its efficiency and cause issues down the road, so this is a step you do not want to skip or rush through!

Since the Subito Cotto line has been partially cured at the factory, the process is faster and easier, but nevertheless of the utmost importance for the longevity of your oven.
The objective of curing a wood burning Subito Cotto Oven is to increase the temperature inside the oven gradually, avoiding thermal shock. To achieve that, we suggest starting a small fire in a separate location (wheelbarrow, metal container, fire pit) and then introducing hot ambers in the middle of the oven, with as little flame as possible.
While it is difficult to quantify the temperature goals, the best results have been achieved by reaching and maintaining, for roughly 30 minutes, temperatures of 250 C° on the first fire, 300 C° on the second, 350° on the third and 400C° on the last. Allow the oven to cool to ambient outdoor temperature in between each heating.
Your Subito Cotto is now ready to cook! If you are using the Gas burner kit to cure your oven, follow the same procedures, taking care to use the lowest settings to achieve those results.
Now that your oven is ready to be used, we would like to draw your attention to the temperature range your oven is able to withstand. The blends of refractory cement used to build your oven have been tested with temperatures that well exceed the maximum operating temperature (550C°) of the Subito Cotto Series.
While the fire is contained in the dome, the oven will function flawlessly up to its very limit. When the amount of wood used to increase the temperature is such that flames exit the dome via the flue, the heat can be transferred to the composite cover, compromising its ability to protect the oven from the elements. Because of this, we recommend feeding only small pieces of dried wood at a time, thus allowing all the heat to be absorbed by the oven, and not to be vented out!

The curing of an oven kit follows closely the procedures set forth for our assembled ovens, with one major difference; the oven has to rest for eight to ten days after the assembly process has been completed.
In cases of extreme humidity, or where you want to reduce the number of days before the first fire, we recommend the use of an electrical heater, to ensure a properly dried chamber.
Once the recommended settling period has elapsed, you can follow the procedures highlighted in the Subito Cotto Section. You will then be ready to cook!

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