Meatless Mexican: Grilled Portobello Mushroom Tacos Recipe

Ingredients

• 3 teaspoons champagne vinegar
• 1 head garlic
• 1/4 shallot
• 3 teaspoons white truffle oil
• 1 cup mayonnaise
• 6 large portobello mushrooms
• 4 tablespoons olive oil
• 1 red onion
• 1 yellow onion
• 1/4 cup olive oil
• 1/2 teaspoon kosher salt
• 1/2 teaspoon ground black pepper
• 1 cup fresh orange juice
• 12 (4-inch) corn tortillas
• 6 large radishes
• 6 ounces Parmesan cheese
• 2 cups pea shoots