Beetroot relish

I've harvested 7 of the Detroit beetroot now - one I cooked and ate, five made up the 500g I needed to make relish (ended up with around 500ml worth), and the last one was definitely the runt of the litter - only around half an inch across, even though it had been growing as long as the others. I fear the one in the photo below is the runt of the second litter!