Cooking Lesson #1168: St. Paddy’s Day Irish Baked Mashed Potatoes

…from the Perspectives’ Kitchen

How you doin’? My Uncle Eddie introduced me to Tom Bergin’s, an Irish-style pub in Los Angeles years ago. The owners were devoted to making it the best pub they could. So much so that they periodically went to Ireland on “beverage research” trips. They came back from these trips with new Irish jokes, the latest pub menus and outstanding new recipes from rural Ireland.
 
One of my favorite meals they shared with me was from an Irish pub in a small remote town in the west of Ireland. They told me the pub had a traditional thatched roof, enormous fireplace with a smoldering peat fire, great pints of beer and amazing food, including the best potatoes they had ever had.
 
After one of these trips, I came in for dinner—roast duck and apple-stuffed pork loin. Just as we were starting dinner our server plunked down a large gratin dish of mashed potatoes loaded with Cheddar… the edges still hot from the oven were popping with butter. We were told that they came with every entrée. “Wow,” I thought, “these really are my kind of people.”
 
The mashed potatoes were molten hot, shot through with green onion and contained what I guessed was roughly two tons of butter—again my kind of dish. They had a silky-smooth texture that was contrasted perfectly by the slightly crispy coating of cheddar that was spread over the top. Sure, the entrées were really very nice, but those mashed potatoes were a major bonding moment for me and Tom Bergin’s. 
 
Prep time:  15 minutes
Bake time:  65 minutes
Yield:  6 servings
 
Ingredients
6 tablespoons salted Irish cultured butter, divided (I prefer Kerrygold Irish butter)
2-1/2 pounds unpeeled Yukon Gold potatoes
1 tablespoon kosher salt, plus more for seasoning
1 large clove garlic
3 sliced green onions, tops and bottoms
1 cup whole milk, half ‘n half or heavy cream
1 teaspoon freshly grated nutmeg, divided
1/8 teaspoon cayenne pepper
1/2 teaspoon freshly ground black pepper
1 cup grated sharp cheddar cheese
 
Directions

1. Read the recipe all the way through before starting. Measure all ingredients and have at your side.
2. Preheat an oven to 375° F on the convection setting; 400° in a conventional/regular oven.
3. Rub 1 tablespoon of the butter on the bottom and sides of a 1 1/2 to 2-quart casserole dish; set aside.
4. Combine the whole potatoes, salt and garlic clove in a large pot.
5. Add enough cold water to cover the potatoes by a few inches.
6. Bring to a boil over high heat.
7. Reduce the heat to medium-high and cook until the potatoes are very tender when pierced with a fork, 15 to 20 minutes.
8. Drain the potatoes in a colander set in the sink and leave the potatoes in the colander to steam-dry for about 10 minutes. Retain the garlic clove.
9. While the potatoes are drying, add the remaining 5 tablespoons butter to the empty pot used to boil the potatoes and melt over medium heat.
10. Add the green onions and cook until fragrant, 1 minute.
11. Remove the pot with the onions from the heat and set aside.
12. Discard the potato skins and cut the potatoes into chunks to make it easier to rice them together with the retained garlic clove. Alternatively, pull the skins off of the potatoes with your fingers and mash the potatoes and garlic clove in the pot with a potato masher until smooth.
13. Fold the potatoes into the butter mixture with a rubber spatula until evenly mixed.
14. Gently fold the milk into the potatoes in 3 additions. The mixture will be very loose, but it will set up as it bakes.
15. Add 1/2 teaspoon of the nutmeg and the cayenne pepper. Season to taste with salt and pepper.
16. Spoon the potato mixture into the prepared casserole dish and sprinkle the cheese over the top of the potatoes.
17. Bake until the potatoes puff slightly and the cheese is melted and starts to brown in places, about 30 minutes.
18. If your oven does not have a convection setting, you can broil the casserole until browned on top after baking, 1 to 3 minutes.
19. Sprinkle the remaining nutmeg over the top of the potatoes and serve immediately.
20. Leftovers can be kept, covered, in the refrigerator for up to 3 days. Simply microwave until piping hot to reheat.

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ChefSecret:  Boiling the potatoes with the skins on prevents them from becoming waterlogged when cooking and helps retain more of the flavor of the potatoes in the finished dish. Substitute any other melty cheese for the Cheddar if you prefer—Gruyère, fontina, Havarti and smoked provolone all work well with this recipe. Take it to the next level by adding a slice or two or crisp, chopped bacon or dice boiled ham.
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Quip of the Day:  Q. How do Irish cats celebrate St Patrick’s Day?  A. They have a purrrr-ade.
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Do you have a question or comment? Send your thoughts to [email protected]. All recipes and cooking tips are posted on our website https://www.perspectives-la.com/perspectives-on-food.  We have hundreds of archived Covid Era recipes which you can easily access using this link https://www.perspectives-la.com/Covid-19-Survival-Guide
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To you and everyone dear to you, be strong, positive, kind, thankful, and stay well and safe. Take a breath and count your blessings, and if you have a little extra to share with others, please consider donating to Feeding America, Tunnel to Towers, Union Rescue Mission, Samaritan’s Purse and/or American Red Cross.

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