Worst food I've ever had out of desperation, rotten meats. Two that stick out to me was chicken breasts that were rainbow colored, they literally looked like they had oil spilled onto them, and had managed to form a crust. Horrifyingly, I was unable to tell after they'd been chopped up, cooked, and thoroughly smothered in sauce. The other was a beef steak with a thick layer of greyish slime that I scraped off to reveal a dark brownish-reddish hue. I cooked it well-done (obviously), but I didn't have any seasoning at all except salt. To this day, I cannot forget the smell and taste, for reasons that are probably not what you expect. The meat smelled sweet, not necessarily foul, and it had a sweet flavor as well, it didn't actually taste horrible. Every time I catch a whiff of a dead animal at just the right stage of decomposition it makes me hungry and sick to my stomach at the same time. I cannot stand the flavor of blueberries at all anymore, or any overripe fruit, because it tastes EXACTLY like that sickly sweet rotten meat flavor the steak had. Pro tip, if you ever somehow find yourself in a relatable situation, toothpaste will get rid of the horrific stomach ache from eating rotten food if you eat it with or shortly after the food. For less terrible stomach aches or immediate stomach ache relief, I find that carbonated drinks work very well - Coke, ginger ale, seltzer water with some lemon in it, etc.
Worst food I ever made not out of desperation, probably that time I combined shrimp, 2 different kinds of spaghetti sauce, frozen peas and carrots, and half the seasonings on my shelf into "soup". I don't remember why I did this, but in my defense, I had never tasted or cooked shrimp before. Even my husband (bless him, he will eat just about anything that hasn't gone bad) couldn't stomach it. I think I was either sick or drunk when I did it, too.
Worst food I ever paid for, I went to an asian place and ordered some kind of duck soup. I remember it being expensive, a small serving size, the broth was bland as fuck, but worst of all was the duck itself. I could tell it was frozen just from the texture, maybe freezer burned, it had almost no flavor whatsoever, and the meat was rubbery. Worst of all, they left the skin on, which ended up forming chewy fatty blobs on the meat chunks with the texture of slimy rubber. It was horrible, I have never gone back, I only finished it and paid because I was in polite company and did not want to incur the wrath of the angry looking tiny old Asian grandma running the place.
Worst food someone else made for me, "spring rolls" a la my in laws a couple weeks back. I took one bite, gagged, instinctively looked to my husband for help, before barely managing to swallow and saying "thanks but I've been fighting a bout of nausea this evening so I'm not very hungry" before recusing myself. I very nearly vomited that singular bite back up.
Now, I know none of you know me, but you presumably read the first paragraph of this post already. You know I've eaten food that a starving Ethiopian might think twice about and lived. What I didn't tell you is that I have literally never thrown up in my life, as far back as I can remember. Not from eating rotten garbage, not from an illness, not from numerous bouts of food poisoning (all linked to eating out and not the shit I was forced to consume, somehow), not from anything. The closest I have come to ever throwing up was a single bite out of that spring roll.
And what the fuck was so bad about this spring roll, you're probably asking? Well, they used a clear tapioca spring roll wrapper, the kind you wet with a little water to seal it before cooking and it has that gelatinous texture. They filled it with thawed frozen peas, chopped raw carrot, half-cooked rice noodles, and cabbage, no seasonings. It was served with a pre-packaged frozen peanut sauce that came with some frozen Asian food, not sure exactly, that they thawed at room temperaure, and no other sides. Notice, however, that I did not mention how they cooked it - because they did not. Each ingredient was at a different temperature from each other, ranging from lukewarm to ice cold, each item had a different texture and level of doneness to each other, it was overall cold with not even a hint of salt to try and make it taste of anything at all except vaguely vegetable-y and sad. The spring roll wrapper stuck to my fingers, and to each other, they had droplets of water still sitting on them after they had been wetted to be sealed. The texture was like gloop, the wrappers had semi-dissolved but still held their wretched ingredients together, it was like eating a half-gelatinized pudding stuffed with what might have passed for an "oriental salad" 75 years ago. I could tell from everyone else's reaction at the table, including the in-laws, that they had immediately realized this was a fucking mistake. I think they believed it was too late to admit defeat, to try and recover by frying or baking them after we had each grabbed a few, so they continued to eat these abominations with rising horror and disgust in their faces. No one finished their plate, the remaining spring rolls sat in the fridge for 3 days, not even the dogs (there were 4, none of them picky) would touch them. My father in law got the farthest of us all, by drenching what was 3-4 peoples' worth of peanut sauce on a single roll. The dinner table was completely silent, which was highly unusual for them. A few hours later someone suggested pizza to go with our card game and there were no objections whatsoever.