Best Chocolate Chip Cookies

"Crisp edges, chewy middles."
INGREDIENTS (Nutrition)
1 cup butter, softened
1 cup white sugar
1 cup packed brown sugar
2 eggs
2 teaspoons vanilla extract
3 cups all-purpose flour
1/2 tsp cream of tarter
1 teaspoon baking soda
2 teaspoons hot water
1/2 teaspoon salt
2 cups semisweet chocolate chips
1 cup chopped walnuts
DIRECTIONS
Preheat oven to 350 degrees F (175 degrees C).
Cream together the butter, white sugar, and brown sugar until smooth. Beat in the eggs one at a time, then stir in the vanilla. Dissolve baking soda in hot water. Add to batter along with salt. Stir in flour, cream of tarter, chocolate chips, and nuts. Drop by large spoonfuls onto ungreased pans.
Bake for about 10 minutes in the preheated oven, or until edges are nicely browned.