• Posts
  • RSS
  • ◂◂RSS
  • Contact

  • Jam is obsolete

    July 25th, 2020
    food  [html]
    Jam is a very natural way to preserve fruit. The fruit is ripe only a small fraction of the year, you'd like to be able to eat it all year long, so you cook it with enough sugar that it won't go bad for a long time. But now that we have freezers, jam is obsolete.

    When you make jam, you change the taste and texture of the fruit in several ways:

    • Squishing the fruit makes it into a more consistent texture, suitable for spreading.
    • Adding sugar makes the jam sweeter, and also much less healthy.
    • Heat changes the flavor of the fruit, With more volatile flavors evaporating.
    • Heat evaporates some of the water, thickening it (reducing).
    • Heat releases pectin, or you add additional pectin, which gels the jam.

    Some people make freezer jam, which skips the heated steps, and gives you a flavor much closer to fresh fruit. Because it hasn't been cooked thoroughly, you need to store it in the freezer, but since freezers are a thing now, that's not a problem.

    We can go a step further, though, and just use frozen fruit. Take frozen raspberries, defrost them, and squish them up with a fork:


    on eggy waffles, with nutella

    This takes about a minute for defrosting, 10s for squishing, and is far superior to jam. Not so sweet, better flavor, and it's cheaper [1] and healthier as well!

    Being able to store traditional jam in the refrigerator once you've opened it is an advantage, but I think it's a temporary one. Over time, I expect households will shift towards more freezer space relative to refrigerator space, as the quality of frozen food continues to rise. We got a chest freezer soon after we bought our house, and I'm glad we did!


    [1] Our grocery store has raspberry jam for $2.75/lb, frozen raspberries for $4.39/lb, and jam is ~40% fruit. Though since we have the freezer space like raspberries a lot I've been buying them online, 30lb at $3.08/lb shipped. A shipment fills 6-8 one-gallon ziplocs depending on whether it ends up mostly whole or mostly pieces.

    Comment via: facebook, lesswrong

    Recent posts on blogs I like:

    What I've been doing instead of writing

    I’ve been too busy with work to write much recently, but in lieu of that, here’s a batch of links to other stuff I’ve been doing elsewhere. The thing I’m most excited about: Wave raises $200m from Sequoia, Stripe, Founders Fund and Ribbit at a $1.7b valuati…

    via benkuhn.net September 11, 2021

    Some reasons to measure

    A question I get asked with some frequency is: why bother measuring X, why not build something instead? More bluntly, in a recent conversation with a newsletter author, his comment on some future measurement projects I wanted to do (in the same vein as ot…

    via Posts on Dan Luu August 27, 2021

    Songs about terrible relationships

    [Spoilers for several old musicals.] TV Tropes lists dozens of examples of the “I want” song (where the hero of a musical sings about their dream of escaping their small surroundings). After watching a bunch of musicals on maternity leave, I’m wondering h…

    via The whole sky July 17, 2021

    more     (via openring)


  • Posts
  • RSS
  • ◂◂RSS
  • Contact