In New Orleans, The Food Network's Dave Lieberman learns to make shrimp gumbo with Chef Poppy from the New Orleans Cooking Experience.Related RecipeIngredients: * 1 cup finely chopped onion * 3 garlic cloves, minced * 1 teaspoon canola oil * 1/2 pound reduced-fat cooked kielbasa or Polish sausage, halved and cut into 1/4-inch slices * 1-1/2 cups chopped green pepper * 1 can (14-1/2 ounces) diced…