In summary.....freakin' everywhere
Incidentally - I used to do a job in agriculture in the UK and dealt with the UKs largest sprout farmer.
He used to earn - say GBP200 per tonne for sprouts but they all needed to be squashball sized. They are hand cut from the stem and if somebody picked them too small, the supermarkets couldn't accept them and he's throw them in the bin and sell them for animal feed - GBP 6 per tonne - and he'd give the picker a good bollocking
One day, a buyer came in from Marks and Spencer (a higher end food retailer in the UK, higher than Coop, lower than Globus) and said "We'd like to start selling a range of baby sprouts - you know, fresh, delicate etc - can you help?". So he went round the back of the shed, got a small black tray that he found, put 16 of the "waste" sprouts in them in a nice square, wrapped them in clingfilm and said "Yes, we've been doing some trials on that idea - how do you like these?"
Of course, they did, and he now earns between GBP1500-2000 per tonne for these "baby" sprouts which the week before were worthless!