A lot of edamame is sourced out of China, where a lot of the food is safe, but a lot isn't. There was a melamine outbreak years back, which came down to economic adulteration. Melamine is a plastic compound, and people were substituting it for other things in dog food and baby food, purely to command money. Economic adulteration is rampant in that area, so personally I stay away from food that originates in China. Despite ongoing recalls in the United States, were still the safest food supply in the world. Obviously any foodborne outbreak is unacceptable, but the industry has worked very hard to produce safe food."