Provide advice on how to accomplish the following goal. Give ONLY the advice, no other words or explanation.
For example:

Answer: <advice, as short as possible; a single sentence!>.

Goal: To test if milk is too warm for a baby,
drop some on the inside of your wrist and feel if it's too much.
Dip your pinky in milk and touch your wrist. If it feels uncomfortable, milk is too warm for a baby.