Caution the food handler that she must clean and sanitize her knife.
Explanation:
A food handler should always be very careful about product hygiene, as it is very easy for these foods to become contaminated. In the above question, a food handler decides to remove excess fat from a meat and use the same knife to cut potatoes. This behavior is incorrect, as the fat will contaminate the potatoes and will not allow them to be cooked properly, as well as bringing possible fat pathogens to the potatoes.
For this reason, it is important for someone to inform the food handler that after removing excess fat from the meat, he should clean and disinfect the knife in order to use it in potatoes.
