Top kitchen substitutions you can make

I'm all for streamlining in the kitchen.  This past holiday, I was making cookies with the kids and ran out of baking powder as we're ready for step #3.  {insert groan}  What could I use instead without trekking to the grocery store on Christmas Eve?

After this experience, I started to research some common kitchen ingredients that can be substituted for each other.  Here is my list.  I'll keep adding whenever I run out of anything in the future!

IF YOU DON'T HAVE...	AMOUNT	IN A PINCH, YOU CAN USE...
Baking Powder	1 teaspoon	1/4 teaspoon baking soda plus 1/2 teaspoon cream of tartar
Bread Crumbs	1 cup	1 cup of crushed crackers
Brown Sugar	1 cup	1 cup white sugar + 1/4 cup molasses; decrease the liquid in the recipe by 1/4 cup
Corn Syrup	1 cup	1 1/4 cups white sugar + 1/3 cup water   OR   1 cup honey
Cottage Cheese	1 cup	1 cup ricotta cheese
Cream (half & half)	1 cup	7/8 cup milk + 1 tablespoon butter
Cream of Tartar	1 teaspoon	2 teaspoons lemon juice or vinegar
Evaporated Milk	1 cup	1 cup light cream
Flour (Cake)	1 cup	1 cup all-purpose flour minus 2 tablespoons
Flour (Self-Rising)	1 cup	7/8 cup all-purpose flour + 1 1/2 teaspoons baking powder + 1/2 teaspoon of salt
Herbs (fresh)	1 Tablespoon	1 teaspoon of dried herbs
Honey	1 cup	1 1/4 cups white sugar + 1/3 cup water   OR   1 cup corn syrup
Ketchup	1 cup	1 cup tomato sauce + 1 teaspoon vinegar + 1 tablespoon sugar
Lemon juice	1 teaspoon	1/2 teaspoon vinegar   OR   1 teaspoon white wine   OR   1 teaspoon lime juice
Lemon zest	1 teaspoon	2 Tablespoons lemon juice
Mayonnaise	1 cup	1 cup sour cream   OR   1 cup plain yogurt
Molasses	1 cup	3/4 cup brown sugar + 1 teaspoon cream of tartar
Ricotta	1 cup	1 cup dry cottage cheese
Shallots, chopped	1/2 cup	1/2 cup chopped onion   OR   1/2 cup chopped green onion
Sour cream	1 cup	1 cup plain yogurt
Soy sauce	1/2 cup	4 Tablespoons Worcestershire sauce + 1 Tablespoon water
Stock--beef or chicken	1 cup	1 cube beef or chicken bouillon dissolved in 1 cup water
Vinegar	1 teaspoon	1 teaspoon lemon or lime juice   OR   2 teaspoons white wine
White sugar	1 cup	1 cup brown sugar   OR   1 1/4 cups confectioners' sugar   OR   3/4 cup honey   OR   3/4 cup corn syrup
Wine	1 cup	1 cup chicken or beef broth   OR   1 cup fruit juice + 2 teaspoons vinegar   OR   1 cup water
Yogurt	1 cup	1 cup sour cream   OR   1 cup buttermilk