Someone who is completely unwilling to experiment with or eat unusual and unique types of food.
M: OMG, you should totally try these sweetbreads. They are incredible!
N: Um, I've never had them before - what are they?
M: Delicious fried animal parts, like pancreas and thymus gland!
N: That is gross! No way, I will never try your sweetbreads.
M: Whatever. You, my dear, are SUCH a food prude.
Someone who thinks their eating habits are superior because they eat nothing but organic and/or vegan.
Joe and Nikki won't join us for dinner because everything isn't organice. They are such food prudes!