Writer Tarek Osman traces many of the current problems in the Middle East to the secret Sykes-Picot agreement of 1916
Strips. Tri-tip strips cook to rare in about 8 to 10 minutes, and to medium in 12 to 14 minutes. This is the total cooking time, so turn the strips over at the halfway point -- 4 to 5 minutes on each side for rare, and 6 to 7 minutes on each side for medium.Calman Lugo/iStock/Getty Images.trips. Tri-tip strips cook to rare in about 8 to 10 minutes, and to medium in 12 to 14 minutes. This is the total cooking time, so turn the strips over at the halfway point -- 4 to 5 minutes on each side for rare, and 6 to 7 minutes on each side for medium. Calman Lugo/iStock/Getty Images.
Place the foil packet on the grill away from the direct heat of the flames. Cover the grill and allow the tri-tip to cook for roughly 2 1/2 to 4 hours, depending on the size, until the tri-tip has reached an internal temperature of at least 145 F. Use a meat thermometer to determine the temperature.tep 5. Remove the tri-tip from the grill and wrap it in a sheet of aluminum foil so that it is completely covered. You can opt to add vegetables that you would like to steam cook in the foil with the tri-tip, such as sliced bell peppers and onions, potatoes and carrots.