Instant Pot Clam Chowder Recipe

Name: Instant Pot Clam Chowder Recipe
Ingredients: 3 6.5 oz cans Chopped Clams in clam juice; Water or Fish Stock to mix with clam juice; 5 slices uncooked bacon, chopped; 3 Tbsp butter; 1 medium onion, diced; 2 ribs celery, diced; 1/4 tsp dried thyme; 2 cloves garlic, minced; 1 1/4 tsp kosher salt, more to taste; 1/4 tsp fine ground black pepper; 1 1/2 lbs red potatoes, approximately 4 cups cut in 1 – 1 ½ inch chunks; 1 1/3 cups half and half; 1 1/2 Tbsp corn starch or arrowroot powder, (optional for thickening); 2 green onions, optional for garnish