When baking multiple roasts at the same time in an oven, it's important to allow sufficient space between each roast to ensure proper air circulation and even cooking. The exact amount of time to leave between each roast will depend on the size and type of roasts, as well as the specific oven you are using. However, as a general guideline, you should aim to leave at least 1 to 2 inches of space between each roast.
By providing some space between the roasts, you allow hot air to circulate around them, promoting more uniform cooking and preventing them from steaming each other. This spacing also helps to prevent excessive moisture buildup, which can affect the browning and texture of the roasts.
Additionally, it's important to consider the size and capacity of your oven. If you overcrowd the oven with multiple roasts, it can impact the oven's ability to maintain consistent temperature, resulting in longer cooking times or unevenly cooked roasts. Be sure not to overload the oven beyond its recommended capacity.
To determine the precise cooking time and spacing for your specific roasts, it's best to consult the recipe instructions or guidelines provided by the manufacturer. If no specific guidance is available, you can generally estimate the cooking time based on the weight and type of meat, as well as monitor the internal temperature using a meat thermometer to ensure doneness.