1. Depending on whether you are using beef or mutton keema the cooking time may vary. Frozen mince should always be defrosted at room temperature, otherwise it will turn lumpy while it is being cooked.
2. While many people are of the opinion that there is no need to wash hygienically packed mince, I feel it is always advisable to do so. However, ensure that it is well drained before use or else the dish will turn watery. Wash & drain it at least for an hour prior to use.