I’ve mashed carrots with swede in the past and frozen it successfully.
Freezing as soon as possible after picking, or digging up, is meant to mean much higher vitamin levels are retained.
When we visited my aunt in Canada she asked us to take her to a farmers market (new thing to us at the time). She bought two big bags of veg, Rinsed off any mud then shoved them all into the freezer. She lived well into her 90s so can’t have done her any harm.
Parents-in-Law. What do/did you call them?
Army horses loose on London streets