Toasting spices brings out the essential oils and deeper flavors. Grinding herbs is a common way to use them in recipes.

We'll start with a frequently used herb and spice blend, bay leaves, coriander and cumin seeds. First, put the spices in a skillet. These are bay leaves. Bay leaves are actually a dried herb that you'll find on the spice rack. Cast iron works best because of the way it transfers heat.

Now give them a shake so they don't burn.

Cool the spices slightly before grinding.