Cast iron waffle makers require special use and care. Your cast iron waffle maker will produce perfect waffles for years, if properly cared for. Like all cast iron cookware, the more you use your waffle iron, the better the seasoning on its surface, which makes it non-stick. Seasoning results from a layer of oil used during cooking that bakes into the iron each time the iron is used. For best results, cook your waffles over the high heat of a grill or cooking fire. In a pinch, you could use an electric stove burner, but the cooking time will increase, depending on your stove's heat output.
Place the closed cast iron waffle maker onto a cold cooking surface and allow it to slowly heat until the cast iron reaches 218 degrees Celsius. Turn the waffle iron every 3 minutes to evenly heat both sides. It should require 8 to 10 minutes to heat. Look for a light stream of steam coming from the waffle iron when you open it to indicate that the iron has reached approximately the correct temperature. Optionally, point a temperature gun to the cooking surface of the cast iron to determine an exact reading of when the temperature reaches 218 degrees Celsius.
Open the waffle iron and cover both cooking surfaces with a light coating of melted butter with a pastry brush or spray both surfaces with cooking spray.
Ladle ¼ cup of prepared waffle batter into the waffle iron and close.
Cook the waffle on the first side for 2 to 3 minutes.
Turn over the waffle iron and cook the other side for 2 to 3 minutes. Use longer cooking times for crisper waffles.
Open the waffle iron and stab the centre of the waffle with a fork and lift it out to a plate.
Allow the waffle iron to cool slightly before cleaning while it is still warm. Gently scrub the cooking surfaces of the warm waffle iron with a nylon brush under running water.
Dry the waffle iron thoroughly with paper towels. Wipe a thin layer of vegetable oil with a paper towel over both the cooking surfaces before storing to preserve the non-stick coating.
Allow the waffle iron to heat back up to the slightly steaming stage after removing the first waffle before cooking another. Spray the surfaces with cooking spray and cook the remaining waffles as you did the first.