Group 2: for children weighing 15 - 25 kgs (33 - 55 lbs), roughly 4 to 6 years. Booster seats that only fit into Group 2 are less common. Most are group 2 and 3, or groups 1, 2 and 3. Groups 2 & 3: for children weighing 15 - 36 kg (33 - 79 lbs), roughly 4 to 11 years.
Broil the ribs for about 5 minutes, until the sugar in the dry rub is bubbling and the ribs are evenly browned. Bake the ribs: Set the oven to 300Â°F. Move the ribs to an oven rack in the middle of the oven. Roast for 2 1/2 to 3 hours for spare ribs or 1 1/2 to 2 hours for baby back ribs. Halfway through cooking, cover the ribs with aluminum foil to protect them from drying out.
Best Answer: Roasted ribs need at least 90 minutes... 350F for a minimum of 90 minutes. Add BBQ sauce the last 15 minutes... If you really want to speed it up... 425F, wrap in foil and bake for 1 hour.Unwrap, add sauce and bake for 10 to 15 minutes at 350. I'm very hesitant to recommend boiling/parboiling.It goes against what I believe.50F for a minimum of 90 minutes. Add BBQ sauce the last 15 minutes... If you really want to speed it up... 425F, wrap in foil and bake for 1 hour. Unwrap, add sauce and bake for 10 to 15 minutes at 350.