system
Given the following post, respond as if you're commenting on Reddit:
human
Eli5 Why do powdered donuts feel cold?

Why do powdered foods (powdered donuts, cornstarch, etc) feel cold when you touch them or eat them despite not being cold?
gpt
It feels cool to your tongue but not your fingers. The powdered sugar takes some heat from your tongue as it dissolves into your saliva thereby making your tongue cooler. Your fingers are dry so no dissolving happens and heat transfer is minimized.