Tempura

Tempura is a Japanese appetizer of vegetables and seafood coated in a light, crispy batter and deep-fried until golden. The magic is a cold batter made with ice water and minimal mixing, which keeps the coating delicate and shatters when you bite it. A few simple rules about oil temperature and batch size make it work every time.

Ingredients for Tempura

All-purpose flour and cornstarch make the batter crisp and light. Egg yolk and ice water bind it without overmixing. Baking soda adds lift and crispness. Salt seasons the batter. Vegetables like zucchini, bell pepper, sweet potato, and green beans are sturdy enough to hold up to frying. Shrimp cook quickly and stay tender inside a crispy shell. Vegetable oil fries at a steady high temperature without burning. A small bowl of dipping sauce made from soy sauce, mirin, and dashi rounds out the dish.

Why This Tempura Works

The batter stays light because you mix it as little as possible and keep it cold. Lumps are fine and actually help. Ice water and the high ratio of water to flour prevent gluten from forming, so the coating stays tender instead of turning tough and chewy.

The oil temperature matters most. At 350°F (175°C), the outside crisps while the inside cooks gently. If the oil is cooler, the batter soaks it up and turns greasy. If it is hotter, the outside burns before the inside is done.

Frying in small batches keeps the oil temperature steady. A crowded pan cools the oil and causes sticking. A rack under the cooked pieces lets steam escape instead of making them soggy.

Mistakes To Avoid

Overmixing the batter makes it tough and dense. Once you add the wet ingredients to the dry, stir until just combined, about 10 to 15 seconds. Lumps are not a problem and will cook out.

Using room-temperature water or batter warms the oil when you fry, making it drop below 350°F (175°C). The coating will not crisp and will absorb oil instead. Always use ice water and work quickly.

Crowding the pan drops the oil temperature and causes the pieces to stick together. Fry in small batches of 4 to 6 pieces at a time, leaving at least an inch between each one. This takes longer but gives you a crisp result.

Leaving hot oil unattended invites disaster. Stay in the kitchen with the pan the whole time it is heating and frying. Never walk away, not even for a moment.

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Ingredients

• 1 cup (125 grams) all-purpose flour
• 1/4 cup (30 grams) cornstarch
• 1 teaspoon baking soda
• 1/2 teaspoon salt
• 1 egg yolk
• 1 cup ice water
• 1 pound mixed vegetables, cut into 2 to 3 inch pieces (zucchini, bell pepper, sweet potato, green beans)
• 1 pound large shrimp, peeled and patted dry
• Vegetable oil for frying
• 1/4 cup soy sauce
• 2 tablespoons mirin
• 1/4 cup dashi stock

Step-by-step Instructions

1. Pour oil into a deep pot or Dutch oven to a depth of 3 inches. Never fill past halfway. Heat to 350°F (175°C) over medium-high heat, checking with an instant-read thermometer. This will take 8 to 10 minutes.
2. While oil heats, pat all vegetables and shrimp dry with paper towels. Any moisture will cause splattering and prevent the batter from crisping.
3. In a small bowl, whisk together flour, cornstarch, baking soda, and salt. In another bowl, beat egg yolk with ice water until combined.
4. Pour the wet ingredients into the dry and stir gently with a fork until just combined, about 10 to 15 seconds. Leave lumps in the batter. Do not overmix.
5. Working in small batches of 4 to 6 pieces, dip vegetables and shrimp into the batter to coat, then carefully place them into the hot oil. Leave at least 1 inch between pieces.
6. Fry for 2 to 3 minutes, stirring gently once or twice, until the coating is golden and crispy. The shrimp should be opaque inside and the vegetables tender when pierced with a fork.
7. Lift pieces from the oil with a mesh skimmer or slotted spoon and place them on a wire rack set over a sheet pan. Do not drain on paper towels.
8. Let the oil temperature return to 350°F (175°C) between batches, about 1 to 2 minutes. Repeat with remaining vegetables and shrimp.
9. While tempura fries, whisk together soy sauce, mirin, and dashi stock in a small bowl for dipping sauce. Serve sauce at room temperature.
10. Serve tempura hot on a platter, with dipping sauce on the side. Eat within 15 minutes of frying for the best crispness.