Cook Potatoes: Cut potatoes in half and place in a large pot with about 4 inches of water (they don't need to be completely covered). Cover pot with a lid, and cook, covered, until fork tender, about 15-20 minutes. You don't want them "mushy" or falling apart.

Drain and steam: Drain water completely from pot and leave potatoes in the pot, covered with a lid, for about 10 minutes. This gives them time to dry out, which helps them to be extra fluffy.

Season: Remove lid and add butter, chicken bouillon, evaporated milk, sour cream and salt and pepper.

Mash with a potato masher. Taste and add more salt and pepper, if needed, or more milk, until they are creamy, fluffy and smooth. I use an electric mixer to beat them on medium speed for a few seconds, just until light and fluffy. But, be careful not to over-mix them or they will get starchy and gummy!