But let's discuss a few I did find when I first researched this topic back in ' All of the members of the 'Sweet' series of cherry tomatoes are felt to be low-acid, especially "Super Sweet ", a red cherry tomato that, when introduced, was described as "a new hybrid of the low-acid 'Sweet ' variety".
MANY improved varieties of the classic Sweet have been released, all the way up to an inflationary " Sweet Million ". Varieties with the word 'Ace' in their name might also be a good bet, like "Ace 55", a red tomato that was originally catalog-described as being "lower in acid than most other tomatoes and often recommended to people on a low-acid diet.
I'll personally add "Georgia Streak", a HUGE yellow heirloom that develops a red blush throughout the entire fruit as it ripens. My fresh-tomato friends fiends? The also- heirloom varieties "Big Rainbow" and "Marvel Stripe" are very similar in appearance.
In fact, according to Amy Goldman's excellent book, "The Heirloom Tomato" Bloomsbury; , the variety that I've been calling Georgia Streak all these years is more likely to actually be one of the 'Marvels'. I'd trust her —she researched dozens of old seed catalogs looking for the original listings of each variety when they first appeared to try and pinpoint the true names of these hand-me-down treasures.
These 'other color' tomatoes have long been associated with 'low-acid' flavor. Could it be that people just perceive their high sugar-to-acid ratio as tasting "low acid" when it's really some extra sweetness they're sensing? Amy Goldman thinks this may well be the case, but adds that she doesn't personally care for low-acid love apples for the very same reason. And when a tomato is low in both acid and sugar, it's downright bland. So most people will find the taste of these types of tomatoes only mildly pleasing and refreshing—at best ," she told me during a recent snowstorm that had us both dreaming of summer tomatoes.
That said, Amy adds that some low-acid tomatoes do have other desirable traits, like cold hardiness, early ripening and productivity. Now, in addition to her 'Catalog Archeology' research, Amy scientifically measured the sugar brix levels in the hundreds of different tomato varieties she grew over a several year stretch, listing the results in her individual variety descriptions in the book.
But she explains that she 'measured' what she calls 'perceived acidity' the old-fashioned way—by taste, looking for "that wonderful, tongue-tingling, mouth-watering component". So while we know a lot about actual sugar levels, acidity is more of a perception which I think is preferable to measurement sometimes. While I have no problem adding the lemon juice for added safety, it now appears that these tomatoes are not actually low acid after all. There are two U. Department of Agriculture studies of the pH in tomato varieties published in HortScience Journal , one from June of and another from April of They tested 58 varieties cultivars of tomatoes, including red, yellow, and orange, hybrids and heirlooms, and both older and new varieties.
They also examined data from studies from 23 state agricultural experiment stations and multiple USDA laboratories for another cultivars. They were specifically looking at the acid levels in tomatoes for the purposes of home canning. The danger threshold for botulism is 4.
But if you forget to add it for a batch, there is no need for panic, and if you did everything else properly, they will be fine. The range of pH variation is actually very small and the data says that there really are no "low acid" varieties of tomatoes. Blush Tomato. Caro Rich Tomato.
Carolina Gold Tomato. Cerise Orange Tomato. Chef's Choice Green Tomato. Chef's Choice Orange Tomato. Fargo Tomato. Flame Tomato. German Johnson Tomato Potato Leaf. Giant Belgium Tomato. Giant Belgium Tomato Yellow. Golden Rave Tomato. Great White Beefsteak Tomato. Green Doctors Tomato. Grightmire's Pride Tomato.
Hillbilly Tomato. Jet Star Tomato.
0コメント