1.Combine oil, garlic, port and oregano in large bowl; add beef, turn to coat in marinade. Cover; refrigerate 3 hours or overnight.
2.Combine smoking chips and extra port in small bowl. Cover; stand 3 hours or overnight.
3.Cook beef, uncovered, on heated oiled barbecue until just browned all over. Place beef in lightly oiled disposable baking dish. Place drained smoking chips in smoke box; place beside beef on barbecue.
4.Cook beef in covered barbecue, using indirect heat, following manufacturer’s instructions, about 1½ hours or until cooked as desired.
You need smoking chips and a smoke box for this recipe; they are available from barbecue supply stores. port-smoked beefNote