Salt can help remove the gritty dirt that comes with some fresh vegetables. When washing arugula, leeks, or spinach, you should trim them first, then place them in a bowl of lukewarm water. Add a tablespoon of kosher salt, gently shake the bowl so the water swishes around a little, and let the vegetables soak for 20 to 30 minutes. Transfer the vegetables to a colander then rinse them thoroughly with water.
Meat: Salt will force juices out of the meat and prevent it from browning. Wait to salt the meat until midway through the cooking process, then salt it lightly. Another option is to wait until cooking is complete, then salt the meat to taste.
Pasta: Adding salt to cooking water is a good idea, but wait until the water boils then add 2 tablespoons of salt for each pound of pasta. If you salt the water prior to boiling, it will take longer to boil.
Seasoning: Sprinkle peeled garlic cloves with a little coarse salt before attempting to chop them. The salt will absorb the garlic's juice and then dissolve, which will help spread the garlic flavor further.