What was the critical step in Appert's thermal processing applied to sealed bottles?
Answer
Immersing the sealed bottles in boiling water
The core of *appertization* involved applying sufficient thermal energy to the sealed foodstuff. After placing the food inside the glass bottles, sealing them with cork, wire/twine, and wax, the entire assembly was submerged into boiling water. The required duration for this heating process varied based on the specific type of food being preserved. This sustained exposure to high heat was the action that successfully deactivated the spoilage agents within the container.
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