Double Mushroom Mesquite Burger

Name: Double Mushroom Mesquite Burger
Ingredients: Mushroom Burgers; 1.5 pounds Ground chuck or ground beef; 1 1/4 cups Fresh mushrooms sliced and diced; 2 tablespoons Mesquite flavored Liquid Smoke; 1 teaspoon Black pepper; 1/2 teaspoon Salt; 4 pieces Swiss cheese; 1 Onion cut into slivers or diced; 4 Bakery or deli fresh burger buns; 2 tablespoons Olive oil; Ginger Mayonnaise; 1/2 cup Mayonnaise; 1 1/2 teaspoons Powdered ginger; 1 teaspoon Granulated sugar