To Use:

• Using a pot or deep saucepan that the basket will fit snugly on top of, it should rest securely (just) over the rim of the pot so that it won’t slip down inside. You can use a pot that’s larger or a wok and settle the basket inside it (so it sits on the bottom), but you’ll need to use less water with this method to ensure the basket bottom is above the water level.
• Fill the pot with water a few inches deep or about half an inch below the bottom of the basket and bring to a boil. You want the water level deep enough to not run dry during the cooking period, and not so deep that the water reaches up into the basket and boil the food instead of steaming it.
• Arrange food items in each basket then place on top of pot once the water is boiling. Cover with the lid and cook until food is done (depending on size and thickness of pieces, vegetables can take just a few minutes, fish fillets about 10 minutes and chicken pieces can take anywhere from 20 to 45 minutes or so). 
• Careful! What to watch for: Water should never be allowed to run dry, keep an eye on the water level and top up if needed.