Every summer I go on a one-week sailing trip with family and friends on the Salish Sea. Last year I set myself the challenge of brewing a beer on the boat on day one and serving it on the last night out. I picked a low gravity (~1.038 IIRC) bitter and brewed about 1.25 gallons. 3 days for ferm, 3 days for conditioning and carb in a mini-keg.
When we first tasted it on the boat, it wasn't great. Thin, barely carbonated, yeasty, and no character. I took the remainder of the mini-keg home, stuck it in the fridge and ignored it, thinking it was a failure. When I got around to trying it again several weeks later it was good. Not great, but pretty darn good for a session beer, especially after the yeast layer had been sucked out.