Yes, salt and water make a basic electrolyte drink, but salt is mostly sodium chloride, with only trace amounts of potassium and magnesium.
Over the years, table salt has gotten a bad rap, gaining the reputation of being the underdog in the salt world, while Himalayan and Celtic sea salt gets the artisan treatment: better colours, better backstories, better jars. So it's fair to ask whether the upgrade makes for a better homemade electrolyte drink.
Here's the honest version:
- They're still mostly sodium chloride. Himalayan salt is typically around 98% sodium chloride, and Celtic sea salt is similar, just greyer and damper. The colour comes from trace minerals.
- The trace minerals really are “trace”. At a quarter teaspoon per glass, the potassium and magnesium in pink or grey salt are typically a few milligrams at most. A can of OQO’s Energy Plus has 69mg of potassium and 57mg of magnesium.
- Your spoon is not a scale. Coarse sea salt and fine table salt weigh different amounts per teaspoon, so a “quarter teaspoon” of one isn't a quarter teaspoon of another. And a pinch is not a unit of measurement. Ask three people for a pinch and you'll get three different pinches.
- The NHS limit applies to all salt. A quarter teaspoon of fine salt is roughly 1.5g, about a quarter of the 6g a day the NHS recommends adults stay under, whatever colour it is, and that's before lunch, which probably also contains salt.
- It still tastes like salt water. A more expensive salt doesn't change that. It just means the salt water costs more.
Fair play to DIY: it's cheap, it's in the cupboard, and it involves no packaging. Word to the wise: if you're unwell with vomiting or diarrhoea, or you have a condition where salt intake matters, such as high blood pressure, we would advise that you speak to your pharmacist or GP before mixing your own.