This one is super simple. The radishes turned out JUST LIKE POTATOES! Seriously, you should give it a try, if you haven’t already.
on slow cooker mode in my Instant Pot, on high for 5+ hours
(the roast full, not shredded)
Radishes diced and halved
Onions cut in large chunks
I didn’t really measure anything, just eyeballed it until it looked good… and boy was it!