โญ Olive Oil (Best Gluten-Free Option)
3/4:1 (3/4 tablespoon olive oil per 1 tablespoon butter)Olive oil is a liquid fat at room temperature, rich in monounsaturated fats, which can provide a smooth mouthfeel. However, its strong flavor and lack of solid fat content change the texture and taste profile of the mashed potatoes.
Use slightly less olive oil than butter to avoid overly oily potatoes. Incorporate it gradually and taste as you go to balance flavor. Avoid extra virgin olive oil with very strong flavor; a mild or light olive oil is preferable.
The mashed potatoes will be softer and less fluffy, with a noticeable olive oil flavor that may alter the traditional taste of Shepherd's Pie.