Clay soil and although he has spent decades amending it, it's still clay-like. His potatoes and sweet potatoes are worthless. Now don't get me wrong, there are many things that grow well here, and then in some years ti's a good crop and in others, not so much. I also suspect that he could play around with varieties of carrot to find the right ones for this climate, but he hasn't done that. Our friend grew lovely potatoes in her patch, wish he'd find out the variety.
He uses the carrots in carrot cake but there is only so much of that he can make.
Sending the soapy-tasting carrots to the food pantry? I thought that giving anything "less-than" to poor people is frowned upon. Our community garden has the same problem, rotting veggies in the beds. There is always ideas about how to address that but someone really has to step forward to do the work of contacting bed owners for permission to pick, then picking, then hauling to the appropriate food pantry. It's mostly ideas that people love, action isn't so popular.