Drying (dehydration), salting, and fermentation are among the oldest food preservation techniques. These methods date back to prehistoric times and were crucial for survival before the invention of modern refrigeration and canning.
__________ are among the oldest food preservation techniques
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This question is part of 🌍 Current Affairs within the broader 🌐 Current Affairs & GK subject and appears in the PPSC Punjab Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.