Is beef safe to eat if it turns brown?
After beef has been refrigerated for about five days, it may turn brown. This darkening is due to oxidation, the chemical changes in myoglobin due to the oxygen content. ... Beef that has turned brown during extended storage may be spoiled, have an off-odor, and be tacky to the touch and should not be used.
Should mince be brown before cooking?
When it comes to cooking the mince the bright red colour will turn to brown. ... To ensure it's properly cooked, the NSW Food Authority advises cooking mince to a minimum of 71oC all the way through. If in doubt, check the temperature with a thermometer.