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. Rooted in the everyday cooking of Japanese kitchens, Tempura — Authentic Japanese Light-Batter Frying balances technique and tradition: the large raw prawns, peeled and deveined, tails on is treated with care, drawing on time-honoured ratios that locals have refined across generations. The dish carries an unmistakable sensory signature — aromas that fill the kitchen as it cooks, layered textures that reveal themselves bite by bite, and a depth of flavour that comes from patient seasoning rather than shortcuts. Whether served as a weeknight dinner or as the centrepiece of a celebratory table, it reflects a regional pantry where local produce, seasoning habits and cooking vessels shape the final result. Home cooks who make this dish often note how forgiving it is once the core method is understood, and how a few small choices — the freshness of the large raw prawns, peeled and deveined, tails on, the order of additions, the resting time at the end — separate a good version from a memorable one. This recipe walks through those choices so the dish arrives with the character it has on its home turf.

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.

• •

  Vegetarian: replace the main protein with mushrooms, paneer, tofu or hearty beans for a meat-free version.

• •

  Spicier: add fresh chilli, a chilli paste or a pinch of cayenne with the aromatics for a warmer profile.

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