• When temperatures drop, pour-over brewing needs a few adjustments to keep extraction consistent. This case file walks through the common issues travelers face with RAMI gear in cold weather, what was tried, and what actually worked—focusing on water temperature, grind size, and a simple ratio hack.
• Cold ambient air cools your kettle faster—compensate by starting hotter or preheating the brewer.
• If your brew tastes sour, the water is likely too cool; aim for 200–205°F and adjust grind if needed.
• A travel scale that fits in your RAMI kit is non-negotiable for consistent ratios.
• Wrap your brewer in a towel or use a carafe cozy to hold heat during the bloom.