What's the most efficient way for peeling potatoes by hand?
Like, I get comments from people telling me it's weird I always try to peel potatoes like I am trying to make the worlds longest 1-piece potato peel. To me it feels way for efficient and fun to continu down a potato in 1 peel, while circling around it, instead of randomly scraping a hundred different pieces of peel off and having to reintroduce the cutter knife to the potato for every piece.
Given that the skin has up to 12 times the nutrients of the entire potato it covers I personally stopped peeling my potatoes in most situations. It also adds a great crispy texture when you're roasting or frying. With that said, you do you when peeling. If it's cathartic to peel it all in one piece go for it. Or you can cut the potato in half and simply use a knife to trim the skin off like a sweet potato.
Fresh or properly stored non "green" potatoes should be safe to eat with the skin, as the solanine content is usually below the threshold of 100mg per kg, as I understand it according to this Source. What I found interesting is that the Solanine apparently accumulates in frying oil (it starts breaking down at about 170°C according to Wikipedia) which might be troublesome since some places swap frying oil infrequently.
The toxins exist throughout the skin, but in smaller concentration than in the sprouts and green parts. Doesn't mean that the skin is inherently unsafe to eat, but you probably should peel it if you eat potatoes regulary, or if you're cooking for children, old people or someone immunocompromised.