Question: Is it permissible for a cook to taste the food whilst fasting?
There is no harm in tasting food, if necessary. This can be done by placing it on the tip of the tongue too see how sweet or sour it is. However, none of it should be swallowed, rather, it should be spat out or taken out of the mouth. If the food is tasted in this manner, the fast stands valid. Allah knows best.