Place beef in a freezer for 1-2 hours, remove and trim any fat from the outside of the meat, and slice into ¼ inch thick slices. Slice across the grain for best results.
Add marinade ingredients to a saucepan and heat over low heat until they are combined. Set aside and allow to cool to room temperature.
Transfer marinade and sliced beef round into a shallow dish or ziplock bag covering completely.Place into the refrigerator and marinate for 12-24 hours.
Remove from the refrigerator and place on a baking rack to allow excess marinade to drain. Blot meat strips with a paper towel to remove any remaining moisture.