What's he mean by "sweaty" here? Is this word commonly used to describe food?

Native speaker’s answer
Rebecca
I think the speaker wants to say that the food is moist and not dry or lacking moisture. He is probably using "sweaty" here in a humorous way. "Sweaty" is definitely not used to describe food normally (except for the technique of "sweating" food, which means to gently cook something). If it is, it usually is not meant in a positive way. However, we can see that based on the speaker's tone and facial expression, he is just making a joke here. Ex: I feel so sweaty and hot. Ex: Gently sweat the vegetables to draw out their natural flavors.