The revolutionary impact of contemporary technologies in reconsidering conventional agricultural practices is aptly summed up by Thomas Edison’s assertion that the “value of an idea lies in its use.” These developments, which are focused on improving food safety, flavor retention, and shelf life, satisfy consumer needs while maintaining cultural authenticity. Traditional foods are becoming safer and more durable because of cutting-edge non-thermal technologies including cold plasma (CP), high-pressure processing (HPP), and ultrasound (US). These techniques are perfect for foods like fermented fish, dairy products, and grain-based beverages since they not only fight off harmful microorganisms but also preserve minerals and flavor. These developments have greatly expanded the ethnic fermented food and beverage industry worldwide, especially in India. They allow for larger-scale production while preserving traditional flavors, improving nutritional value and safety regulations. New techniques combine conventional methods with contemporary procedures to improve control over the uniformity and quality of fermentation. Cold plasma works especially well on foods that rely on microbial activity, such as dairy, vegetables, and cereals, because it targets microorganisms while maintaining food texture. Starter cultures have seen significant advancements, especially for foods that need certain microbial balances. Advanced molecular biology approaches have improved robust microbial strains that improve taste, safety, and functional properties. The quality, safety, and accessibility of ethnic fermented foods and beverages are being redefined by new technology, as this chapter explores.