The best rice for khao man gai isn't made while the heat is on — it's made in the ten minutes after the heat goes off.
When rice finishes cooking under pressure, the steam inside the pot is still hot. If you open the lid immediately, moisture evaporates unevenly — the surface of each grain becomes sticky while the centre may still be dense.
Resting allows moisture to redistribute evenly throughout each grain — a process called moisture redistribution in food science.
For khao man gai cooked in chicken stock with rendered fat, the resting period allows the fat to absorb into the outer layer of each grain more evenly. The rice ends up more unctuous, more flavourful.
We rest our rice with the lid on — letting the residual steam continue working. Ten minutes is the number we've arrived at after hundreds of tests with the jasmine rice we use.
If you make khao man gai at home and the rice never quite feels right — try resting it for ten minutes after turning off the heat, lid on, no peeking. The difference will be immediate.
