Culinary Chemistry: Potatoes Au Gratin with Beer

by | Jun 19, 2014

Au gratin is a French term used in cooking meaning to prepare something with a topping of browned breadcrumbs or cheese. What a delightful concept! Vegetables and some seafood dishes are often prepared au gratin, but the most commonly recognized dish prepared using this method is probably potatoes au gratin. A quick and tasty side that pairs well alongside many meals, I make my potatoes au gratin using a cheese and beer-based sauce, then add more cheese on top for the finishing touch. I find that using a flavorful, malty beer that has just a little bit of bite works the best in this dish. Try using Pike Brewing’s Scotch Style Pike Kilt Lifter. This Seattle-born beer add flavors of full-bodied malt flavor and mild smokiness to this simple and hearty dish.

Prep time: 20 minutes
Cook time: 1 hour
Makes: 6-8 servings

Ingredients:
8 Yukon Gold potatoes, thinly sliced into rounds
1 small yellow onion, diced
3 cloves garlic, minced
4 tablespoons butter
3 tablespoons flour
2 cups half and half
1 cup Pike Brewing’s Scotch Style Pike Kilt Lifter
1 ½ cups shredded cheddar cheese (plus more for topping)
¼ cup diced green onions
1 teaspoon salt
½ teaspoon pepper

Directions:
Preheat oven to 375 degrees Fahrenheit.

In a saucepan over medium-high heat, melt 1 tablespoon of butter. Add onion to the pan and sauté. Once the onion begins to sweat (about 2 minutes) add the garlic and continue sautéing until onion and garlic are lightly browned (another 2 minutes).

Remove garlic and onion mixture from pan and set aside. Over medium heat, add remaining 3 tablespoons of butter to pan and melt. Once melted, add flour to create a roux. Continuously stir mixture for several minutes, reducing heat if necessary to ensure that the roux does not burn. Once roux is smooth, add half-and-half and beer. Turn heat up to medium-high and stir mixture for 3 minutes, or until mixture has thickened considerably. Add salt, pepper, green onion and cheese, and continue stirring until all the cheese has melted.

In a casserole dish, combine potatoes and sauce, tossing to ensure that each potato slice is well coated. Place in oven and cook for 1 hour. Once potatoes are fully cooked, sprinkle reserved cheese over the top of the potatoes and broil on high for 1-2 minutes, or until top of potatoes are crisp and golden brown.

Margo Greenman

Margo (Greenman) Jorgenson is an enthusiastic beverage, entertainment and travel freelance writer. A graduate of the University of Washington with a Bachelor’s Degree in Arts, Media and Culture, Margo is inspired by the world around her, and committed to exploring and tasting her way through life, sharing her experiences along the way. Margo lives in Gig Harbor, WA, with her husband, Aaron. When she is not writing, you can find her reading, surfing, sailing, camping, and enjoying the enchanting world around her.

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