Whenever you are making a marinade you always want to use a neutral oil. This means the oil has no tastes or flavor to it. It is neutral and picks up the flavors you give it! Mazola Corn Oil is a heart-healthy* cooking oil and creates marinades that make great-tasting food because it has a neutral taste that lets the natural flavor of your food stand out. In this case that is the chimichurri sauce.u003cbr/u003eu003cbr/u003eSo remember, when you are making chimichurri or really any marinade you should select a neutral cooking oil to let the flavors of the marinade stand out.