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Every week, a DIY expert spares us a trip to the grocery store and shows us how to make small batches of great foods at home.
Cara Eisenpress is the blogger behind Big Girls, Small Kitchen and the co-author of In the Small Kitchen, published by William Morrow.
People have accused me of having a love affair with salt. My retort (which I usually keep inside my head) is that I just like things with flavor.
A preference for food with, you know, lots of flavor, has led me to seek out dishes that have the absolute most taste per square millimeter, and that search has led to making sun-dried tomatoes -- concentrated little morsels of tomatoes' sweet-and-savory-ness -- at home. Summer’s abundant tomato harvest begs to be preserved, and once you’ve exhausted tomato sauce, salsa, and tomato jam, sun-dried tomatoes are a brilliant solution.
I took a longing look through White on Rice's post about actually sun-drying tomatoes with sun over the course of a couple of days. Then I took a long look at my apartment, with its shady fire escape and dusty windowsill, and I decided that my oven was going to be the vehicle for turning my fresh plum tomato slices into their chewy "sun-dried" alter egos.
It was a fine choice, though you might argue that gas heat lacks the romance of sunshine.
By slowly cooking sliced tomatoes at a low temperature, you zap them of their moisture, leaving raisin-like remains a third the size of the slice you started out with, and containing all of the original flavors. You don't add any olive oil, as you would when you're simply roasting tomatoes until they burst, but you do add herbs and my one true love, coarse salt.
I start with plum tomatoes, cut into thirds. We all adore a big ugly heirloom or petite cherry tomato, but both have a bit too much water to make them practical for drying. In fact, I extract some moisture from the plum tomatoes before I even put them in the oven, using the same method as for sliced eggplant about to be roasted: salting, resting, and blotting.
An important trick is drying the tomatoes on a rack, instead of right on the baking sheet. This way, hot air surrounds the fruit from all sides, preventing it from basking in its own juices, which could risk a loss of sweetness or a burn from the oven.
And since you're taking the long route and making these treats from scratch, you don't have to rely on an antipasti bar's selection to make key taste decisions for you. If you like slightly plumper sun-dried tomatoes, remove them from the oven sooner; chewier, go longer. If you're always cursing the copious amounts of olive oil in your sun-dried tomato jar, you can skip the oil all together and store the cooled tomatoes dry, in a container in the fridge. I've steeped garlic in my oil to season it, but you can add hot pepper, oregano, or other dried herbs.
The one place I didn't go was canning. It’s hard to can food that’s not very acidic in oil, and I didn’t want to risk a bad outcome. Since these keep so well in the fridge, in oil or not, I skipped the canning conundrum completely. If you know the best way to can sun-dried tomatoes in oil, share in the comments! (The downside is that your oil, if you use it, will solidify in the fridge. But that never bothers me when I’m scooping it out to flavor salad dressing or pesto.)
Makes one 8-ounce jar
1 pound plum tomatoes
A few pinches coarse salt
4 sprigs fresh thyme
1/2 cup olive oil (optional)
1 clove garlic, minced (optional)
Preheat oven to 200°F. Place a metal rack on a baking sheet. Cut each tomato in thirds lengthwise. Each slice should be about 1/3-inch thick.
Sprinkle salt on the cut sides of the tomatoes -- not more than you'd want to eat though! Line a cutting board with a dish towel or paper towels and place the tomatoes on top. Top with another dish towel and another cutting board. Weight with a heavy cookbook or two. The Food52 Cookbook or The Essential New York Times Cookbook are good options. Leave for 20 minutes. This helps get some of the tomatoes' juices out early, before they go in the oven.
Remove the tomatoes from the cutting board sandwich, dusting off any salt that hasn't dissolved, and place them on the rack, with at least 1 inch in between. Sprinkle with the fresh thyme.
Bake for about 5 hours, until the tomatoes are dry to the touch and have wrinkled around the edges. You can really decide how dry you want them -- as dry as raisins? Or do you want to leave a little plumpness? Watch them (and try them) as they cook, and decide for yourself. When done, remove from the oven and let cool to room temperature.
If you're going to be storing your tomatoes in olive oil, place the olive oil and garlic in a small jar while the tomatoes are cooking, and let the garlic steep to flavor the oil.
When the tomatoes are cool, add them to the oil. If you're not using oil, store them in an airtight container in the fridge.
Cara will be answering questions about sun-dried tomatoes on the Hotline for those of you who want to take on this project at home. For the quickest response, go to her recipe and ask a question from there -- we'll email her your question right away!
Don't miss next week's Small Batch, in which Cannelle et Vanille's Aran Goyoaga will show us how to make crisp, delicate ice cream cones at home.
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