Which of these food products launched with minimal marketing but created a billion-dollar category within 3 years due to viral social media popularity and consumer demand?

Product launches in the food industry can be unpredictable, with some items becoming overnight sensations while others quietly disappear from shelves. This trivia question focuses on one of the most surprising food product launch success stories of the last decade - a product that defied market expectations and created an entirely new category. Test your knowledge about innovative food product launches that transformed their respective markets!

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Cauliflower pizza crust (first mass-market version launched in 2016)
Kombucha tea (commercial bottled version in US supermarkets)
Plant-based egg alternatives (liquid form)
Frozen avocado products (sliced/diced for convenience)