Here is an excellent basic recipe for waffles. You will need:
* 1 3/4 cup flour (210 g)
* 2 tsp baking powder
* 1/2 tsp salt
* 1 tbsp sugar
* 3 eggs
* 7 tbsp vegetable oil
* 1 1/2 cup milk (360 mL)

Here's exactly how I prepare the waffle batter:
1) Mix all the dry ingredients in a large bowl.
2) Measure the milk. My measuring cup is large, so I keep the milk in the measuring cup.
3) Add the oil to the milk in the measuring cup.
4) Separate the eggs--put the whites in their own bowl, put the yolks in the measuring cup.
5) Whip the egg whites to maximum whippiness.
6) Add the milk/oil/yolks to the dry ingredients.
7) Beat that mixture until smooth.
8) Add the whipped egg whites to the batter and stir by hand.
9) Ladle this into your hot waffle iron and make you some waffles!

This recipe makes about ten waffles.