Tempura — Authentic Japanese Light-Batter Frying

About This Recipe

Tempura is one of Japan's great contributions to world cuisine — a technique of frying in an exceptionally light, lacey batter that is crisp without heaviness. The paradox of tempura is that its lightness comes from deliberate under-mixing (lumps are good), ice-cold water (prevents gluten development), and very hot, clean oil. Introduced to Japan by Portuguese missionaries in the 16th century, tempura was refined over centuries into an art form — Edo-period street food vendors competed on the lightness of their batter. Today, dedicated tempura restaurants exist across Japan where chefs fry single pieces to order and serve them immediately, seconds after they leave the oil. At home, with the right technique, you can achieve similar results.

Ingredients

Serves 4

• 500 glarge raw prawns, peeled and deveined, tails on
• 200 gmixed vegetables (sweet potato, courgette, aubergine, broccoli, shiso leaves)
• 120 gplain flour (cake flour preferred)
• 1large egg yolk
• 160 mlice-cold water (sparkling water gives extra lightness)
• 1 litrevegetable oil, for frying
• Tentsuyu dipping sauce
• 200 mldashi stock
• 3 tbspsoy sauce
• 3 tbspmirin
• 2 tbspgrated daikon radish, for serving

Instructions

1. 1

   Make tentsuyu sauce

   Combine dashi, soy sauce and mirin in a small saucepan. Bring to a simmer, turn off heat. Set aside.

2. 2

   Prepare prawns

   Score the underside of each prawn with 3–4 shallow cuts to prevent curling during frying. Pat dry with kitchen paper.

3. 3

   Slice vegetables

   Cut vegetables into uniform 5mm slices or florets. Pat completely dry — moisture causes dangerous oil spatter and prevents crispness.

4. 4

   Heat oil

   Heat oil in a deep, heavy pot to 175°C (test with a thermometer). Maintain this temperature throughout — too cool and the batter absorbs oil; too hot and it browns before cooking through.

5. 5

   Make the batter

   Just before frying, whisk egg yolk and ice-cold water briefly. Add flour all at once and mix with chopsticks using 10–12 strokes maximum. The batter should be lumpy and thin — this is correct. Never refrigerate batter or make it in advance.

6. 6

   Fry in batches

   Dip prawns and vegetables in the batter one at a time, letting excess drip off, and lower gently into the oil. Fry in small batches (2–3 pieces at a time) to maintain oil temperature. Prawns take 90 seconds; vegetables 60–90 seconds. The batter should be pale gold, never dark brown.

7. 7

   Drain and serve

   Remove with a spider or slotted spoon onto a wire rack (not paper towels, which trap steam). Serve immediately with tentsuyu and grated daikon.

Variations

• •

  Kakiage tempura: mix julienned vegetables and tiny shrimp directly into the batter and fry as a fritter — a different but equally authentic style.

• •

  Ten-don: place tempura over rice in a bowl and pour tentsuyu sauce over — a deeply satisfying rice bowl.

• •

  Vegetable-only tempura: shiso leaves, sweet potato, lotus root, and pumpkin make excellent vegetarian tempura.

Storage

Tempura does not store well — it must be eaten immediately. If reheating is necessary, use an oven at 200°C for 5 minutes to restore some crispness. Never microwave.

Frequently Asked Questions