Kara, technically you're right - there are 8 fluid ounces in a cup, but depending on what you're weighing, it won't weigh exactly 8 ounces (for instance, maple syrup weighs 12 ounces). But using the 8-ounce benchmark for water, milk, and other thin liquids (e.g., not syrup) works fine for how I use it - baking standard-size home recipes. And I decided to use that same benchmark for testing my measuring cups, all of which except my new ones seem calibrated so that 8 ounces of water reach the 1-cup line – though admittedly the difference between 8 and 8.34 ounces, 2 teaspoons, is a hard difference to pick up in a typical measuring cup. Thanks for alerting our readers to this difference, Kara – readers, feel free to use 8.34 ounces as your benchmark if you so choose. PJH

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