The Food Lab: Better Home Cooking Through Science

(Nandana) #1

CANNED TOMATOES


Do you shudder at the thought of making a fresh


tomato sauce out of bland winter tomatoes? You
should. Even at the absolute height of summer, it can
be difficult to get a great tomato unless you grow it
yourself, which leaves us with canned tomatoes. But
what’s the best type to use? You’ll see five different
versions at the supermarket:



  • Whole Peeled Tomatoes are whole tomatoes
    that are peeled (either by steaming or by
    being treated with lye), then packed in tomato
    juice or tomato puree. Those packed in juice
    are less processed and therefore more
    versatile (tomatoes packed in puree will
    always have a “cooked” flavor, even if you
    use them straight out of the can). Sometimes
    calcium chloride, a firming agent, will be
    added to help prevent them from turning
    mushy. You’ll also see them packed with basil
    leaves.

  • Diced Tomatoes are whole peeled tomatoes
    that have been machine-diced, then packed in
    juice or puree. The main difference here is
    that with a greater exposed surface area, the
    calcium chloride can make the tomatoes too
    firm: they don’t break down properly when

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