What is the single most effective technique mentioned to speed up the process of reaching a rolling boil?

Answer

Using a tight-fitting lid

Placing a tight-fitting lid on the saucepan significantly minimizes heat loss caused by convection and evaporation from the water surface, trapping heat energy inside the vessel.

What is the single most effective technique mentioned to speed up the process of reaching a rolling boil?
cookingmethodwaterheatboil