As any coffee lover knows, the beverage we love is a complex, nuanced drink where even tiny variations can completely change the flavor experience. This became abundantly clear to me recently when I conducted an experiment aging a high-end Colombian coffee for 5 weeks off the roast date.
At first, brewing it with my usual 1:15 ratio produced fairly flat, lackluster results, lacking the brightness and liveliness I'd expect from a premium bean. However, when I concentrated the brew down to a 1:10 ratio, something magical happened - sudden notes of juicy fruitiness and punchy acidity burst forth from the cup. It was like the coffee had awakened from a flavor coma.