RED POTATO AND WILD MUSHROOM GRATIN
SOURCE: ALICE WATERS. THE CHEZ PANISSE MENU COOKBOOK.
Ingredients
1 1/2 pounds/680 grams new red potatoes, peeled
1 1/2 ounce/50 grams assorted dried wild mushrooms, such as porcinis or cèpes, chanterelles, or morels
1 1/4 cups/300 mL hot water
4 tablespoons/60 grams unsalted butter
2 to 3 tablespoons/30 to 45 mL heavy cream
1/2 teaspoon/2 grams minced garlic
Salt and freshly ground black pepper to taste
OPTIONAL: Minced parsley for garnish
Specific Equipment
Mandoline set to to 1/4-inch/0.64-cm thickness
2 bowls
Fine mesh sieve lined with rinsed cheesecloth
Sauté pan OR skillet
Earthenware casserole with a diameter of 9 inches/23 cm and depth of 2 inches/5 cm
Paper towels OR tea towels
Serves 6
Instructions
1. Slice the potatoes into 1/4-inch/0.64-cm thick round scallops with a mandoline. Soak the potatoes in a bowl of cold water, replacing the water thrice at 10-minute intervals.
2. Reconstitute the dried wild mushrooms by soaking in another bowl of hot water for 20 minutes. Pick over the mushrooms for grit. Rinse the mushrooms to remove any residual grit and chop coarsely.
3. Strain the mushroom liquor over a fine-mesh sieve lined with a triple layer of cheesecloth and set aside.
4. Sauté the mushrooms with 2 tablespoons/30 grams butter in a sauté pan or skillet over medium-high heat for 2 to 3 minutes. Stir in the heavy cream, garlic and 1/2 cup/120 mL mushroom liquor and continue cooking for another 3 minutes or until the mushrooms have absorbed the liquid. Season with salt and pepper to taste.
5. Preheat oven to 425°F/220°C.
6. Dry the potatoes thoroughly with paper towels or tea towels. Arrange a layer of potatoes in a lightly buttered earthenware casserole. Season lightly with salt and spoon the mushrooms over the potatoes. Continue layering, alternating between potatoes and mushrooms and ending with a layer of potatoes. Dot the potatoes with the remaining 2 tablespoons/30 grams butter.
7. Bake for 15 to 20 minutes or until potatoes have turned golden brown.