how much salt to use
It depends with what you are cooking. When baking you will require a pinch of salt but when cooking normal foods you should add salt depending on the amount of food. The salt should taste, not too much or too less. In addition, when cooking you should consider the person you are cooking for. Whether it’s a baby, you , an elderly person or a sick person.
As small as a pinch of salt will be best so you can estimate the level of saltiness in your food. You can always add more pinches gradually when you don’t get satisfied with the taste. In cooking it’s better to have less taste than have it with a very strong flavor as it will be very hard to balance then.