Boil potatoes until cooked thoroughly. Drain and let stand 10-15 minutes before mashing.

attach flat beater:

Beat potators on low for 2 to 5 minutes, until visible lumps have disappeared.

Salt potatoes.

attach wire whisk:

Whisk on "High" for 1 to 2 minutes, until smooth.

Add milk and butter.

Mix on "Medium" until absorbed.