Sports Nutritionist

[OakLeaf]

I try not to use "ounces" because it's both a unit of weight and of liquid volume.

Eight fluid ounces is one cup. Two tablespoons are one fluid ounce. Dry ingredients are not usually measured using fluid ounces. The measurements for dry ingredients that Kacie had in the original recipe are measurements of weight. Must've been originally converted from a British or European recipe.

Sixteen ounces avoirdupois is one pound. Packages of pasta, cereal and other dry goods in the USA are usually labeled in pounds and ounces avoirdupois.

When it's water - or any other liquid with a specific gravity of 1 or close to it - it doesn't matter. In the same way that a liter of water weighs one kilogram, a fluid ounce of water weighs one ounce avoirdupois. Not necessarily for other substances.

All clear now? That's why I try not to use "ounces."


ETA: My favorite conversion site. There's a pull-down menu for many common ingredients to convert measures of weight to volume and vice versa. It looks like the original recipe has done the conversion properly (if roughly) from ounces avoirdupois to cups. If you're used to measuring dry ingredients by weight as they do in Europe - I'm not sure about Canada - I'd stick with the original measurements and just convert the ounces avoirdupois to grams.