The particular properties of the volcanic soil are ideal for growing purple potatoes, black truffles, buckwheat, white corn and tomatoes, and Nogue insists the ingredients have a distinct flavour profile compared to the same vegetables and grains grown elsewhere, a characteristic he attributes to the soil's perfect balance of absorption and porosity, as well as its mineral properties.

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They would collect environmental samples such as soil, rubble or vegetation that may have been in contact with the chemical warfare agent and may still contain characteristic degradation products or even traces of it.

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