"Food Snob" is an English slang term often used  to describe a person who exhibits a high and  

sometimes pretentious level of attention to the  quality, preparation, and presentation of food.

This term is generally applied to individuals  who have very particular, often highbrow,  

tastes in food and who may look down on more  common or popular food choices. A food snob is  

not just someone who enjoys good food; they are  perceived to take their passion to an extreme,  

often expressing disdain for what they  consider inferior food or culinary practices.

Let's use it in sentences: 

"My food snob cousin refuses to eat pizza unless  it's baked in a wood-fired oven from Naples." 

"Our food snob friend insists on calling spaghetti  'pasta al dente with heirloom tomato reduction'." 

"I told my food snob brother that I liked  boxed wine, and he hasn't spoken to me since."