When it comes to describing food that is of gourmet quality, there is no shortage of synonyms to use. Words like luxurious, premium, high-end, and artisanal all come to mind. You might also choose to use phrases like top-tier, world-class, or chef-worthy. Describing the food as epicurean or gastronomic can add a touch of sophistication. If you are looking for a more casual way to describe gourmet food, you could say that it is fancy or posh. Ultimately, the words you choose will depend on the context, audience, and tone you want to achieve.