Bring a kettle full of water to a boil and pour it into a large pan.
Add the potatoes to the pan with the sea salt.
Turn the heat high and bring the water back to a boil.
Simmer for 10-15 minutes until you can easily stick a fork all the way through one of the potatoes. This is when you know the potatoes are soft inside and cooked all the way through.
Drain the potatoes.
You can either eat them straight away or store them in the fridge or freezer for a later date.