Smoked Salmon & Lemon Risotto

1 onion , finely chopped 2 tablespoons olive oil 12 ounces risotto rice , such as Arborio 1 garlic clove , finely chopped 6 cups vegetable stock, boiling 6[...]

1/4 cup creme fraiche or 1/4 cup sour cream 1 1/2 teaspoons lemon peel , finely grated 16 large black pepper potato chips or 16 large salt-and-pepper potato[...]