A scallop is a marine bivalve mollusc of the family Pectinidae. Scallops live in all the world's oceans. This is one of the largest families of living bivalves. There are over 300 living species of scallop. Their main adaptation is the ability to swim by clapping their valves together. In this way they escape from most of their predators. They have a good reputation as a food source.
3. Place top round roast, fat side up, on rack in shallow roasting pan. Do not add water or cover roast. 4. Cook in in the oven for about 2 1/2 hours or until the internal temperature reaches 140Â°F for medium-rare or 155Â°F for medium. 5. Remove top round roast from oven and tent loosely with aluminum foil.
1 Oven: If you're cooking the roast in a Dutch oven, preheat the oven to 300 Â°F (149 Â°C) and slow roast the meat for 3 to 4 hours, depending on the weight. 2  A 3 to 4 pound roast will typically take about 4 hours to cook â you'll know it's done when it reaches an internal temperature of 165 to 170 Â°F (74 to 77 Â°C).. Cook on a low heat for several hours. The most important point to remember when cooking bottom round roast is that you should cook it on a low heat for a long period of time â this melts the fat and breaks down the connective tissue inside the meat, leaving it flavorsome and fork tender.