Match your cooking method: for high-heat stir-fry or shallow-frying, choose canola, avocado, or high-oleic sunflower.
Use the listed ratio (most swaps are 1:1). If your substitute tends to taste stronger, reduce by 1–2 teaspoon per ¼ cup and add a neutral oil to balance.
If your recipe uses a lot of oil for frying, do a quick test: heat 1 teaspoon first—if it smokes heavily, switch oils.
For baking, keep the swap 1:1 and avoid substitutes with strong flavor notes that can carry through to the crumb.
Store any used oil promptly to limit off-flavors, especially if it was heated to high temperatures.