Potatoes have superior potassium. I wish you could get more varieties than white, yellow, and red. I've seen purple potatoes but never by themselves. Also you should eat the skins.
Why should you eat the skins? I've heard they contain all the nutrients but I read an interview with a nutrition expert who said that was wrong (makes sense, too). He also said the highest concentration of nutrients was near the surface so I guess leaving the skin on serves this purpose (but not the skin as such! :-)
I would leave the skin on on so called early potatoes that have really thin skin. And I am using a Victorinox peeler that produces the thinnest peels for me. https://schweizer-messer.eu/victorinox-sparschaeler/ (others in the family won't use it due to the crank, though)
Most of the fiber is in the skin[1]. There's some debate about if it also contains more pesticides etc. but you can grow your own or buy organic. It is true that you want to keep your potatoes in the cool and dark, since when they green they become more toxic[2].
I buy organic potatoes but I don't think everything natural is good, for instance high arsenic levels in rice, even more so in brown rice.
Concerning the potatoes there's some kind of preservative they put on the potatoes to inhibit germination (on non-organic potatoes). They used Chlorpropham but that seems to be prohibited since 2020 (in the EU?), now they use Maleic hydrazide but I don't know about any health issues.
Fold the sides of a 50lb horse feed bag down, fill with dirt and add seed potatoes is literally all I did. We go through lots of bags, so I have many empty ones. I have a problem with weeds (thistles) and oregano taking over everything in the garden area, so this was my lazy man's way of avoiding weeding.
I also have a giant compost pile consisting of mostly wood shavings and horse manure that I planted about a dozen potatoes into as an experiment, along with a couple dozen carrots. So far they seem to be doing really well.
I would leave the skin on on so called early potatoes that have really thin skin. And I am using a Victorinox peeler that produces the thinnest peels for me. https://schweizer-messer.eu/victorinox-sparschaeler/ (others in the family won't use it due to the crank, though)