Grilled Asparagus and Shiitake Tacos

Name: Grilled Asparagus and Shiitake Tacos
Prep time: 15 min
Total time: 15 min
Cuisine: Mexican, Latin American, American
Ingredients: 3 tbsp. canola oil; 4 garlic cloves, crushed with press; 1 tsp. ground chipotle chile; 1/2 tsp. Kosher salt; 8 oz. shiitake mushrooms, stems discarded; 1 bunch green onions, trimmed; 8 corn tortillas, warmed; 1 c. homemade or prepared guacamole; Lime wedges; cilantro sprigs; Hot sauce, for serving