THINGS YOU'LL NEED:

2 egg whites
2 mL (1/2 tsp.) vanilla
2 mL (1/2 tsp.) vinegar
50 mL (1/4 c.) sugar
125 mL (1/2 c.) chocolate chips
Cookie sheets
Aluminum foil
Glass bowl
Measuring cups and spoons
Mixer or wire whisk
Spoon

1. Take the eggs out of refrigerator so that they'll warm up to room temperature. Preheat oven to 120 C (250 F). Cover the cookie sheets with aluminum foil, shiny side up.

2. Place the egg whites, vanilla and vinegar in the bowl. Using the mixer or wire whisk, whip the mixture until it's white and foamy.

3. Beat in the sugar a little at a time until you've added it all. Keep whipping the mixture until it's stiff and glossy.

4. Lightly stir in chocolate chips.

5. Drop the batter by spoonfuls onto the cookie sheets and bake for about one hour, until light brown. Let them cool before removing from sheets. Makes 24 cookies.