>>2583756first you need an interesting and appetizing subject
second you need lighting that encourages intimacy and good feels. like most sit-down restaurants have. warm, diffuse. as creatures of habit and pleasure we're very picky about how we feed. comfort and enjoyment should be the subliminal message of your scene.
finally, you need the precise angle from which to strike. is it one food on the plate that requires only a shallow DoF? maybe it's several foods and you need a wider focus approach. it's all about the psychalagy.