Light-Roast Coffee Tastes Sour with a Portable Coffee Machine? (Live PST 7pm Sun-Thu)

Today, I’m testing a light roast with a portable coffee machine. The roastery recommended a 1:1 ratio, but it tasted too sour in this setup. So I’ll compare 1:1.5 and 1:2 ratios using the same 17g dose, then check how the TDS and flavor change. [Live] PST 7pm Sun-Thu