Conversions from Volume to Weight
buttermilk and milk (whole, 2%, 1%, nonfat)
1 tablespoon = 1/2 fluid ounce = 15.1 grams
1/4 cup = 2 1/4 fluid ounces = 60.5 grams
1/3 cup = 2 3/4 fluid ounces = 80.6 grams
1/2 cup = 4 1/4 fluid ounces = 121 grams
2/3 cup = 5 1/2 fluid ounces = 161.2 grams
3/4 cup = 6 1/4 fluid ounces = 181.5 grams
1 cup = 8 1/2 fluid ounces = 242 grams

 

cream (heavy or whipping)
1 tablespoon = 1/2 fluid ounce = 14.5 grams
1/4 cup = 2 2/3 fluid ounces = 58 grams
1/3 cup = 2 3/4 fluid ounces = 77.3 grams
1/2 cup = 4 fluid ounces = 116 grams
2/3 cup = 5 1/2 fluid ounces = 154.6 grams
3/4 cup = 6 1/3 fluid ounces = 174 grams
1 cup = 8 fluid ounces = 232 grams

 

half-and-half, sour cream, and yogurt
1 tablespoon = 1/2 fluid ounce = 15.1 grams
1/4 cup = 2 1/4 fluid ounces = 60.5 grams
1/3 cup = 2 3/4 fluid ounces = 80.6 grams
1/2 cup = 4 1/4 fluid ounces = 121 grams
2/3 cup = 5 1/2 fluid ounces = 161.2 grams
3/4 cup = 6 1/4 fluid ounces = 181.5 grams
1 cup = 8 1/2 fluid ounces = 242 grams

 

Dairy Substitutions
For 1 Cup You Can Substitute
buttermilk or sour milk 1 tablespoon lemon juice OR vinegar plus enough milk to equal 1 cup (let stand 5 minutes) OR 1 cup milk plus 1 3/4 teaspoon cream of tartar OR 1 cup plain yogurt
crème fraîche 1/2 cup each sour cream and heavy cream
half-and-half 1/2 cup light cream plus 1/2 cup whole milk OR 1 1/2 tablespoon melted butter plus enough whole milk to equal 1 cup
light cream 3 tablespoons melted butter plus enough whole milk to equal 1 cup
marscapone 1 cup regular cream cheese
nonfat milk 1/3 cup nonfat dry milk plus 3/4 cup water
sour cream 1 cup plain yogurt OR 1 tablespoon lemon juice plus enough evaporated whole milk to equal 1 cup
heavy cream 3/4 cup ice-cold evaporated milk OR 4 ounces frozen whip dessert topping or 1 1/4 ounce package dessert topping mix, prepared
whole milk 1 cup nonfat milk plus 2 tablespoons melted butter/margarine OR 1/2 cup evaporated whole milk plus 1/2 cup powdered whole milk OR 1 cup soy milk
yogurt 1 cup buttermilk OR 1 cup milk plus 1 tablespoon lemon juice