Olive Oil (Best Option)
1 tablespoon per 1 tablespoon butterOlive oil is rich in monounsaturated fats, which mimic butter's fat content, allowing it to effectively sauté onions, garlic, and other aromatics without burning. Its liquid state at room temperature ensures even distribution in the soup.
When using olive oil, choose extra virgin for flavor but avoid overheating to prevent bitterness. Monitor the heat to maintain a gentle sauté and preserve the oil's beneficial compounds.
Compared to butter, olive oil imparts a slightly different flavor profile but maintains the soup's richness and mouthfeel, making it a seamless substitute in most soup recipes.