Which of these sustainable food packaging innovations is already being commercially used by major food brands?

In recent years, food companies have been revolutionizing their packaging to reduce environmental impact while maintaining food freshness and safety. From biodegradable materials to innovative designs that minimize waste, packaging innovations are transforming how we consume and store food products. This trivia question explores one of the most groundbreaking sustainable packaging developments in the food industry. Can you identify which innovative packaging solution is actually being used in the market today?

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Seaweed-based edible packaging that dissolves in hot water for instant soups and noodles
Self-cooling containers made from recycled materials that reduce temperature by 20°F without refrigeration
Packaging that changes color when food is no longer safe to eat, eliminating the need for expiration dates
Containers made from compressed mushroom mycelium that decompose fully within 24 hours of disposal