"To check the seasoning" means to taste or test the amount of salt, spices, or flavors added to a dish to make sure it is just right before serving. Full definition
Whisk the dressing ingredients together with a pinch of sea salt, and then check the seasoning, adding more maple syrup or vinegar to balance. (meatfreemondays.com)
Stay in check all season long by layering it with neutrals and chambray shirts. (bestproducts.com)
Stir several times during the cooking and check the seasoning for salt and pepper. (strawberriesforsupper.com)