The books / Mead Making / chapter 9 of 21

The cellar through the year

All chapters
  1. Honey, water and yeast
  2. Why mead goes wrong
  3. Never boil the must
  4. Honey and gravity
  5. The alcohol is the gravity you lost
  6. Choosing a yeast
  7. Feed it in thirds
  8. Sanitise everything it touches
  9. The cellar through the year
  10. Three steady readings
  11. Racking off the lees
  12. Faults and what caused them
  13. A stuck ferment and the restart
  14. Clearing, fining and the second racking
  15. Stabilise before you sweeten
  16. Dry, semi-sweet and sweet
  17. Bottling
  18. Varietal meads
  19. Patience is a technique
  20. Selling mead, and the licence
  21. What the cellar leaves out

The ground is a slow thermometer. The year's swing in temperature shrinks with depth and arrives later, so a cellar is cooler than the air in summer, warmer in winter, and its warmest weeks come after midsummer rather than on it.

A ferment also makes its own heat. A wine must commonly runs 5 to 8 C above its room; a small vessel sheds heat faster, but still runs warm.

Together they decide the yeast: one with a narrow range belongs to the months that fit it.

In this cellar the year runs from about 10 C in February to 19 or 20 from July to September, and a ferment adds 3. D47 pitched from Jun 29 to Oct 6 runs hot, and D47 or 71B pitched from Dec 21 to Apr 15 sticks.