This is my Mom's Thanksgiving and Christmas recipe:
4 lbs. Yukon Gold potatoes, or whatever you like
8 ounces sour cream
1 stick butter
2 ounces chopped fresh chives (one bunch)
1/2 cup heavy cream
Salt and pepper
1. Boil potatoes (peeled or unpeeled - I prefer peeled) in water till they're tender (when you can stick a fork in and it comes right out).
2. Drain and let the steam evaporate off, then cut them up.
3. Mix in the ingredients and cut or mash to preferred consistency. (I prefer them casually mashed and heavily lumpy - but I do understand that the Irish expect them to be creamy, and that a single lump is the shameful sign of an incompetent wife.)
4. Season with salt and pepper.
Serve, if you must, with a side of steak, roast beef, turkey, pork chops, lamb chops, or roast chicken, and daintily drizzle a reduced jus of the meat on top of your potato piece de resistance.