We have been experimenting, with great success, leaving the oil out of the marinade.   I know that the rule for marinades is that some fat is needed because it helps transfer fat-soluble flavors into the meat and also helps retain moisture. Fat also helps round out flavor profiles and keep acidic flavors from overpowering the rest of the flavors.   However, all that being said, we have had great success with taking out all of the oil from this marinade, and replacing it with an equal amount of water.   I love that we don’t use a pricey ingredient and have to throw it away after marinating meat in it. I also love that it saves a ton of calories.   At this point, I’m not changing the recipe card from including oil, as so many people believe that oil is needed in marinades. However, just know that it’s totally possible and just as good.   It also helps to eliminate grill flare ups when you leave the oil out of the recipe.