Truffle Burger

• glaze
• 1 1/2 cups tawny port
• 2 tablespoons white truffle oil plus more to taste
• 1/8 teaspoon truffle salt
• 1 pinch sugar
• aioli
• 1/2 cup mayonnaise high-quality
• 1 tablespoon white truffle oil plus more to taste
• 1 clove garlic minced
• 2 tablespoons fresh lemon juice
• burgers
• vegetable oil for brushing
• 1 1/2 pounds ground beef coarsely
• 4 slices cheese Il Boschetto al Tartufo or other truffle
• 4 brioche or portuguese buns, split
• unsalted butter melted, for brushing

1. Make the glaze: Bring the port to a simmer in a small saucepan over medium-high heat. Cook until slightly reduced and syrupy, about 10 minutes. Remove from the heat and whisk in the truffle oil, truffle salt and sugar; add more truffle oil to taste. Let cool slightly.
2. Make the aioli: Whisk the mayonnaise, truffle oil, garlic and lemon juice in a small bowl; add more truffle oil to taste. Set aside.
3. Cook the burgers: Preheat a cast-iron or other heavy-bottomed skillet over high heat. Lightly brush the skillet with vegetable oil. Form the beef into four 3/4-inch-thick patties, 4 inches each. Cook until the bottoms are seared, 4 to 5 minutes. Flip and cook about 4 more minutes for medium. Top each burger with a slice of cheese and let melt, about 1 more minute; remove to a plate. Brush the cut sides of the buns with melted butter and toast in the skillet, 30 seconds to 1 minute.
4. Spread the aioli on the bottom buns; top with the burgers. Whisk the glaze and drizzle over the burgers; cover with the top buns.

glaze, tawny port, truffle salt, sugar, aioli, mayonnaise, garlic, lemon juice, burgers, vegetable oil, ground beef, tartufo, buns, butter

Taken from www.yummly.com/recipe/Truffle-Burger-1176088 (may not work)