Cut red potatoes in half.

Place potatoes in a 3-quart saucepan and cover with salted water.

Bring to a boil, then reduce heat and simmer for about 20 minutes, or until potatoes are tender.

Drain the potatoes.

Return the potatoes to the saucepan and shake over low heat to dry them.

Add butter, buttermilk, crumbled Gorgonzola cheese, salt, and pepper to the potatoes.

Lightly mash with a fork or the back of a spoon, leaving some larger pieces.