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Recipe courtesy of America’s Test Kitchen

How to Cook Shrimp Tempura

WHY THIS RECIPE WORKS:

A few preliminary attempts at making tempura made us see why some Japanese chefs devote their entire careers to this one technique. Success hinges almost entirely on the batter—which is maddeningly hard to get right. We wanted a recipe for perfectly cooked shrimp tempura—light, crisp, and so fresh-tasting that it barely seemed fried.

We settled on using the largest shrimp available, since it’s easy to overcook small shrimp. Instead of a wok, we substituted a large Dutch oven, the test kitchen’s preferred deep-frying vessel. Cooking the tempura in 400-degree oil also helped limit grease absorption. To prevent the batter from clumping on the inside curl of the shrimp, we made two shallow cuts on the underside of its flesh. For the batter, we replaced a bit of the flour with cornstarch to improve the structure and lightness. For a super tender coating, we used a combination of seltzer and vodka instead of the traditional tap water. Seltzer is a little more acidic than tap water and therefore slows down gluten development, while the vodka prevents the formation of gluten. Our tempura was now light and crisp with the essence of sweet, tender shrimp

Tip: Do not omit the vodka; it is critical for a crisp coating. For safety, use a Dutch oven with a capacity of at least 7 quarts. Be sure to begin mixing the batter when the oil reaches 385 degrees (the final temperature should reach 400 degrees). It is important to maintain a high oil temperature throughout cooking. If you are unable to find colossal shrimp (8-12 per pound), jumbo (16-20) or extra-large (21-25) may be substituted. Fry smaller shrimp in three batches, reducing the cooking time to 1½ to 2 minutes per batch. See Straighten Out Your Shrimp below for tips on preventing the shrimp from curling.

Prep time: minutes
Cook time: minutes
Total time:  minutes
Yield: 4 servings

Ingredients:

  • 3 quarts vegetable oil
  • 1 1/2 pounds colossal shrimp, peeled and deveined (8 to 12 per pound), tails left on (see note)
  • 1 1/2 cups unbleached all-purpose flour
  • 1/2 cup cornstarch
  • 1 large egg
  • 1 cup vodka (see note)
  • 1 cup seltzer water
  •  Kosher salt
  • 1 recipe Ginger-Soy Dipping Sauce

Directions:

  1. Adjust oven rack to upper-middle position and heat oven to 200 degrees. In large, heavy Dutch oven fitted with clip-on candy thermometer, heat oil over high heat to 385 degrees, 18 to 22 minutes.
  2. While oil heats, make 2 shallow cuts about ¼ inch deep and 1 inch apart on underside of each shrimp. Whisk flour and cornstarch together in large bowl. Whisk egg and vodka together in second large bowl. Whisk seltzer water into egg mixture.
  3. When oil reaches 385 degrees, pour liquid mixture into bowl with flour mixture and whisk gently until just combined (it is OK if small lumps remain). Submerge half of shrimp in batter. Using tongs, remove shrimp from batter 1 at a time, allowing excess batter to drip off, and carefully place in oil (temperature should now be at 400 degrees). Fry, stirring with chopstick or wooden skewer to prevent sticking, until light brown, 2 to 3 minutes. Using slotted spoon, transfer shrimp to paper towel-lined plate and sprinkle with salt. Once paper towels absorb excess oil, place shrimp on wire rack set in rimmed baking sheet and place in oven.
  4. Return oil to 400 degrees, about 4 minutes, and repeat with remaining shrimp. Serve immediately with Ginger-Soy Dipping Sauce.

TECHNIQUE #1

BATTER UP


TOO THICK
Overmixed batter fries into a thick, breadlike coating.

TOO PUFFY
Whisking whipped egg white into the batter creates a balloonlike coating.

TOO THIN
Undermixed batter remains thin, contributing to overcooked shrimp.

JUST RIGHT
A surprise ingredient and the right technique keep our coating crisp and airy.

TECHNIQUE #2

BOOZE FOR BETTER BATTER?

The batter for shrimp tempura is devilishly hard to get right, easily turning thick and heavy if you overmix even slightly or let it sit too long. Even when a first batch came out light and crisp, subsequent batches were progressively thicker and greasier. In the past, we’ve guaranteed success with another finicky foodstuff—pie crust—by replacing some of the water with vodka. Would the same swap in tempura batter lead to a coating immune to overmixing and resting?

THE EXPERIMENT

We fried two batches of shrimp in two different batters. The first batter contained 1 egg, 11/2 cups of flour, 1/2 cup of cornstarch, and 2 cups of seltzer water. In the second, we replaced 1 cup of the seltzer water with 1 cup of vodka.

RESULTS

The vodka-batter shrimp was identical from the first batch to the second, turning out light and crisp each time. The shrimp dipped in the batter without vodka came out heavier and greasier in the second batch.

EXPLANATION

When water (in this case seltzer) and flour are mixed, the proteins in the flour form gluten, which provides structure—but it only takes a few too many stirs (or too many minutes of sitting) to develop too much gluten and an overly heavy batter. Because vodka is about 60 percent water and 40 percent alcohol (which does not combine with protein to form gluten), it makes the batter fluid and keeps gluten formation in check no matter how much you stir or allow it to sit.

TECHNIQUE #3

STRAIGHTEN OUT YOUR SHRIMP

When cooking shrimp for tempura, the underside tends to shrink more than the top, causing the shrimp to curl tightly and the batter to clump up and cook unevenly inside the curl. Here’s a way to alleviate that problem.

After peeling and deveining a shrimp, hold it on its back on the cutting board. Use the tip of a paring knife to make two 1/4-inch-deep incisions on the underside about 1/2 inch apart.

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