Vegetarian Corn Chowder

Name: Vegetarian Corn Chowder
Ingredients: 4 ears of corn shucked, silk removed and sliced off the cob; 1 yellow onion peeled and diced; 2 cups russet potatoes peeled and diced (about 2 medium potatoes); 1 carrot diced; 1 stalk of celery diced; 2 cloves garlic minced; 1 1/2 tsp salt; 3/4 tsp pepper; 1 chipotle pepper diced, or substitute with 1/4 tsp red pepper flakes; 1/2 tsp yellow curry powder; 1/2 tsp coriander; 1/2 tsp turmeric; 4 cups vegetable stock; 1 cup heavy cream; 2 tbsp olive oil; 2 tbsp butter; 2 tbsp cilantro minced (optional)