How to Make the Ultimate Umami-Bomb Vegetarian Demi-Glace
1 large russet potato, peeled and coarsely shredded
1 large sweet potato, peeled and coarsely shredded
1/4 cup coarsely chopped scallions
1/2 teaspoon finely chopped fresh thyme
3/4 teaspoon salt
1/2 teaspoon freshly ground pepper
2 tablespoons vegetable oil
In a large bowl, toss the russet and sweet potatoes with the scallions, thyme, salt and pepper.
In a heavy 9- to 10-inch non-stick skillet, heat 1 tablespoon of the vegetable oil. Spread half of the potato mixture evenly in the pan and cook over moderately high heat until firm and browned on the bottom, about 5 minutes. Turn and cook until browned on the other side, 4 to 5 minutes longer. Transfer the potato pancake to a large baking sheet and keep warm in a low oven. Repeat with the remaining vegetable oil and potato mixture. Cut each pancake into 6 wedges and serve hot.