Reply To: Chidushim on Daf Yomi Shabbos 30

שבת מ,ב

Tosfas explains the difference between a primary keli from the range and a secondary keli which is mutar even if it scorches. A primary dish keeps the heat through its walls whereas pouring from a secondary dish, as it is not warmed up, does not. When making instant coffee, we should pour the hot water into a secondary keli to pour on the coffee in the cup.