The preferred is to use jacketed container to get uniform temperature throughout

DEAR DOCTOR

Heat transfer occurs by three main mechanisms: conduction, where rigorously vibrating molecules transfer their energy to other molecules with lower energy; convection, in which the bulk movement of a fluid causes currents and eddies that promote mixing and the distribution of thermal energy; and radiation, where a hot body emits energy that can act upon another system via electromagnetic waves. Convection and conduction are the two most prominent methods of heat transfer in liquids and gases.

REGARDS

The preferred is to use jacketed container to get uniform temperature throughout

I use a kettle assuming it is free of all plastic menace related to boiling temperatures !!!

I agree with Aparna.

Indeed, Kettle. It's free from all the plastic related diseases.