Grilled California Asparagus and Lamb with Mustard Aioli

• Mustard Aioli :
• 1/2-1 cup mayonnaise,homemade or purchased
• 1/2 tablespoon Dijon mustard
• 1 teaspoon fresh lemon juice
• 3 large cloves garlic, chopped finely

Asparagus and Lamb :

• 1-1/2 lbs. boneless lamb steak, cut into 1-1/2-inch cubes
• 1-1/2 lbs. jumbo California asparagus, cut into 1-1/2-inch lengths
• olive oil, as needed salt, as needed
• freshly ground black pepper, as needed