[kebman]

> What do carrots have to do with potatoes?

Nothing more than that carrots and taters are staple foods where I come from. It comes with nearly all dinner recipes here in Scandinavia, so it's very common to buy them together.

> I read that refrigerating potatoes isn't recommended because some starch converts to sugar

It's only a problem if the potatoe freezes or is subjected to frost damage. Then the potato will go mushy and bad. If it's then subjected even to lukewarm temperatures, it may start to ferment or become infected with fungi. And for that reason it's very popular with moonshiners. ;)