Cook's Illustrated
Ketchup
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Ketchup

We measured pectin levels, calculated pH, and grabbed our Bostwick consistometer to explain the surprising results of our ketchup taste test.

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The Big Cheese

Extra-Sharp Cheddar Cheese

We purchased eight varieties and headed into the tasting lab to sample them plain and melted into grilled cheese sandwiches.

The Best PB&J

Peanut Butter

The creamy, sweet peanut butter we enjoyed as kids now has plenty of competition at the supermarket. You now can buy low-sugar, no-sugar, and low-fat peanut butter...but are they any good?

Pantry Staples

Balsamic Vinegar

Few foods demonstrate such a wide range in price or quality. Our tasters decode the mysteries of balsamico.

A Better Bread

Whole Wheat Bread

We rounded up nine types of 100-percent whole wheat bread and headed into the tasting lab to sample them plain and toasted with butter.

Inside The Test Kitchen

Supermarket Extra-Virgin Olive Oils

Supermarket Extra-Virgin Olive Oil

You get what you pay for with most supermarket extra-virgin olive oils: bland, bottom-of-the-barrel, and boring. Is there a brand worth buying?

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Hot Sauce

Our favorite won points for its "bright" and "tangy" notes and potent heat, making it good enough to be not just an ingredient, but also a condiment.

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Flour

Flour

We set out to learn if there was a single all-purpose flour that could best handle most any recipe. Six months later, we had the answer.

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America's Test Kitchen