Rivers are the primary body of water found in tropical rainforests. Many rainforests feature one large river that feeds the entire ecosystem and many smaller rivers that drain into the major water body, such as the Amazon river and its many tributaries.
1 Cook in the oven for 30 minutes at 325 degrees F (165 degrees C). 2  Reduce the heat to 300 degrees F (150 degrees C), and cook for 1 1/2 hours. 3  Remove roast to a platter to rest for 10 to 15 minutes. Return meat to pan, place remaining bay leaf on top of meat, and cover. 2  Cook in the oven for 30 minutes at 325 degrees F (165 degrees C). 3  Reduce the heat to 300 degrees F (150 degrees C), and cook for 1 1/2 hours.
Put the roast directly onto the oven rack once the oven has finished heating. Place a tray beneath the roast to catch the drippings. The fat side of the roast must face upward so that the flavor of the meat drips down as the roast is cooking. Let the roast cook for 20 minutes or until browned. Lower the heat of the oven to 200 degrees (conventional ovens would use 225 degrees). Cook for an hour and a half, then check the temperature of the middle of the roast. It should be at 135 to 140 degrees.