Bottled potatoes, they do not come in tins here, are only edible if you slice and fry them.
If you have room in your freezer, you are far better off making mashed potatoes and freezing them in a suitable quantity for one meal.
Unfortunately, most potatoes have been washed before being packed and sold now, but even so, they last longer if you take them out of the packet or net they are sold in, as soon as you come home from the shops and store them in a wooden or cardboard box, lined with newspapers in a cool (frost-free) dark place, than if you keep them under the sink, or in the fridge.
I store mine in the cellar, which is unheated - they remain unwrinkled for at least a month, after that they tend to sprout, but you can knock the sprouts of before peeling them.