Culinary Notes
The "Pinch" (Grain Size): Professional chefs rarely use fine "Table Salt" for cooking. Its grains are too small, making it easy to over-salt. Instead, use Kosher Salt or Flaky Sea Salt (like Maldon). The larger grains allow you to pick them up with your fingers ("the pinch") and feel exactly how much you are adding, giving you total tactile control.
Osmosis (Moisture Control): Salt draws water out of cells.
Vegetables: Salt aubergines or cucumbers 10 minutes before using to draw out excess water and concentrate the flavour.
Meat: Salt steaks immediately before cooking, or 40 minutes prior. If you salt 5 minutes before, moisture is drawn to the surface and steams the meat (ruining the sear). If you wait 40 minutes, the meat re-absorbs the salty brine, seasoning it internally.
Pasta Water: The water should be "salty like the soup," not the sea (which is too salty). Salt raises the boiling point slightly, but its main job is to penetrate the pasta starch so the noodle has flavour inside, not just sauce on the outside.
Baker's Friend: In bread dough, salt tightens the gluten structure and controls yeast fermentation. Without it, bread rises too fast and tastes like cardboard.