I recently bought a pre-packaged bag of brussels sprouts. The sprouts in the bag looked great, green and plump with not a spec of black or brown on them. The next day I cut open the bag and found that the entire bag smelled like a mix between vinegar and over-ripened cantaloupe. If I cut open a single sprout the smell was even stronger.
There was no evidence of spoilage or a mushy texture, all the raw sprouts were firm.
I have eaten and cooked brussels sprouts many many times before so I am familiar with their normal cabbage-like or sulfurous scent. These sprouts were not like that, it was a strong sour smell.
I tried cooking with them and the smell never went away after either boiling or roasting. They also tasted like they smelled.
Does anyone know what could have happened? Was there some kind of chemical involved?