Mediterranean Instant Pot Lamb Roast With Herbs & Potatoes

Ingredients

• 2 tablespoons extra virgin olive oil
• 5 to 6 pounds leg of lamb (bone-in or boneless)
• 1 teaspoon sea salt
• 1 bay leaf (crushed)
• 1/2 teaspoon ground black pepper
• 1 teaspoon dried marjoram
• 1 teaspoon dried sage
• 3 cloves garlic (minced)
• 1 teaspoon ground ginger
• 1 teaspoon dried thyme
• 2 cups broth
• 2-1/2 to 3 pound potatoes (peeled and cut into 2" to 3" pieces)
• 2 to 3 tablespoons arrowroot powder (optional)
• 1/3 cup pure water