Squalor Flavor
An acquired taste of shittiness, primarily in the fast food realm. Similar to the taste of umami, but instead of rich sumptuous flavors there's an underlying hatred of the minimum wage job, the food chain, and your desperation as the customer... and a lotta grease. It's the part of a White Castles or an Arby's sandwich that you can't define, but elevates it to euphoric nostalgia of a simpler time in your life.
The breakfast burritos at Sonic are good in a squalor flavor kinda way. The individual ingredients themselves are shitty, but together there's nothing else like it.