Common reactions among many types of people when their spouse burns their food, or forgets the salt, or oversalts, or otherwise destroys it, are statements such as “what’s wrong with you, don’t you know how to cook” and “didn’t your mother/father ever teach you anything” and so on.
Remain patient, as the Prophet (صلي الله عليه وسلم) remained when his wives cooked food he didn’t like. He sat, and said nothing at all, nor did he eat from it.
Realize the person is more important than the meal, and take the opportunity to say to yourself “You know what, this person and their feelings are more important–it’s ok, it’s just burnt food.” Positive and encouraging statements correct painlessly. Acknowledge the effort, regardless of the results.
May Allah grant us all wisdom in our da’wah and patience in our afflictions.