[xsmommy]

you do not marinate it, you pour the stuff over it, and then baste every 20 min or so. One suggestion that I followed, was to preheat the oven to 500 deg and cook it for a half hour at the high heat to make a nice crust, and then turn the oven off and leave it in another 60-90 min depending on how you like it done. This turned out a perfect medium rare.

[WhyisaTexasgirlinPA]

thanks