Why the yeast number moves
Fermentation roughly doubles in speed for every 8°C warmer, so two hours on the counter is worth about eight in the fridge. The dose here is fitted to that curve and to two doses bakers agree on: 0.5% instant yeast for a same-day dough, and 0.25% for a 48-hour cold ferment after a short warm bulk. Treat it as a starting point and let the poke test have the last word.