A combination of the words "nom" as in "om nom nom
" (used to describe the sound you make when eating something tasty) and "amazing". -Basically meaning a food that is so amazingly delicious that there's no other word to describe it except for "nomazing".
Lindsey: "If you will allow me a moment to gloat, I just have to say that I make the best d*** pulled pork everrrr!"
Aidan: "I will definitely allow you to gloat because pulled pork is nomazing."