Like wine grapes, hops are said to reflect the specific character of their soil, climate and farming technique, and the best ones are highly coveted.

FORBES: Czech Mate

Now, Dr Charters has set about trying to help growers in the Champagne region decide the future of their industry, notably the trend towards smaller, more distinctive brands that reflect a particular "terroir" -- the combination of climate and soil composition that gives a wine its character.

CNN: Learning to lead in Champagne

It's an article of faith among French winemakers that the composition of the soil and its mineral components are the most important determinants of the character of the resulting wine.

WSJ: Is a Bottle of P��trus Really Worth Thousands? | On Wine by Jay McInerney