This beauty isn’t quite ready to harvest. Yes, it’s a tomato. I believe it’s of the Andes variety… it’s a paste tomato with very little gel, few seeds, and delicious flesh. Pick a green tomato at your own peril. You can coax a green tomato to ripen, but the results are rarely satisfying.
Vine-ripened tomatoes are NOT better than tomatoes that ripen off the vine. Still, there is such passion for vine-ripening that kitchen gardeners perpetuate the lie; they claim a vine-ripened tomato is noticeably better.
Ripen Tomatoes Well
Last summer, Your Small Kitchen Garden blog challenged the conventional wisdom that store-bought tomatoes are horrible because they ripen off the vine. I argued that store-bought tomatoes are lousy because they are lousy cultivars: ripened on or off the vine, they grow up to be flavorless and wanting in texture.
Then I explained how I harvest, and I insisted that my “picked-pink” tomatoes are just as good as their vine-ripened counterparts… in fact, that picked-pink tomatoes are better because they don’t crack or develop “green shoulders.” Please read the original post here: The Vine-Ripened Tomato Lie.
I’ve enjoyed the insights from readers who have shared their opinions. Some are adamant that vine-ripened tomatoes are dramatically tastier than picked-pink tomatoes… and I won’t argue with their experiences. In my experience, if there is a difference, It’s insignificant and I’d be happy to prepare a scientific double-blind taste-test of several varieties of tomatoes both vine-ripened and picked pink. I’m confident that 99% of participants in such a test would not be able to distinguish between the two.
One person who read my original post on this suspiciously declared that picked-pink tomatoes lack the nutritional qualities of vine-ripened tomatoes. The visitor went by the name “Dr. Tomato,” lending a sense of authority to his or her comments. I conceded that it’s possible there are nutritional differences, and asked Dr. Tomato to provide links to the research that supports the claim.
My first tomato harvest of 2010 is a very large paste tomato that I’ve picked-pink. The tomato has just started to change color, and it will finish on my dining room table. Had I left it on the plant, a rain storm could have caused it to crack… and direct sunlight could have made it develop green shoulders.
Dr. Tomato probably wasn’t listening, because the links never materialized. Then, yesterday another commenter “sided” with Dr. Tomato. This left a bad taste in my mouth: I hate arguing about facts. If something is so, then opinions about it are meaningless. When a yardstick is 36 inches long, you seem a little silly to say, “In my opinion, the ruler is 37 inches long.” A simple measurement can settle the issue, so why take sides? I went in search of facts about tomato nutrition.
What Science Says
Turns out food science enthusiasts have done some research on ripening tomatoes off the vine. I read several (incredibly dull) studies full of science-writing gobbledygook and have reduced the obtuse language to a few simple factual statements:
1. There is no stastically significant nutritional (including vitamin C and Lycopene) difference between vine-ripened and picked-pink tomatoes. (Conclusion of the study Colour of post-harvest ripened and vine ripened tomatoes
(Lycopersicon esculentum Mill.) as related to total
antioxidant capacity and chemical composition.)
At the peak of tomato season and then some, there are hundreds of tomatoes ripening on my dining room table. In this photo, the youngest tomatoes are in back, with the oldest – ready to eat – in front.
2. Some picked-pink tomatoes develop MORE lycopene (the antioxidant) than vine-ripened tomatoes do, others develop LESS lycopene. This seems to depend, in part, on the temperature at which you ripen the picked-pink tomatoes, and, perhaps, on whether you’re growing the tomatoes hydroponically.
3. You can harvest tomatoes well before they become fully ripe without loss of lycopene. (Conclusion of the study Lycopene Content among Organically Grown Tomatoes.)
So, you won’t become malnourished if you eat picked-pink tomatoes. Because there are so many advantages to harvesting tomatoes this way, once again I encourage you to try it and decide for yourself: When a tomato starts to turn from green to red—when it already has pink skin—pick it and set it in your house to finish ripening (I fill bowls with picked-pink tomatoes). When it’s fully-ripe, taste it next to a freshly-picked vine-ripened tomato.
If you taste a difference, is it enough of a difference to make you pass on the advantages of picking pink? Whatever you decide I hope we can still get along… and thanks for considering this heretical suggestion.