About possibly healthy salt substitutes I noticed Heinz Ketchup has a salt substitute version that uses potassium chloride instead of the usual salt. If this is safe and tastes like salt could it be a better additive than sodium chloride? Since it has potassium wouldn't this be a benefit for Heart health or against stroke if not used too much?
The taste of potassium chloride is not close enough to sodium chloride so the salt substitutes usually contain a mix of potassium and sodium chloride.  This is healthier than pure sodium chloride.