Asparagus Tempura Recipe

Prepare asparagus

Trim woody ends from asparagus (about 1/2 to 1 inch off) so spears are uniform length. Pat dry thoroughly with paper towels — dry surface helps batter adhere.

Dry dust

Place 1/4 cup flour in a shallow bowl and lightly roll each asparagus spear in flour, shaking off excess. This gives the cold batter something to cling to.

In a small bowl, whisk together 1/2 cup mayonnaise, 1 tsp wasabi paste, 1 tsp lemon juice, 1/2 tsp soy sauce and a pinch (1/8 tsp) salt. If the mayo is thick, add up to 1 tsp water to reach a smooth, dip-able consistency. Taste and adjust wasabi or lemon to preference. Refrigerate until ready to serve.

Preheat oil: Pour 3–4 cups vegetable oil into a deep, heavy pot or deep fryer and heat to 350°F (175°C). If you don't have a thermometer, test by dropping a small bit of batter — it should sizzle and rise immediately.

Make batter: In a medium bowl, whisk together 1 cup all-purpose flour, 1/4 cup rice flour, 1/4 tsp baking powder (optional) and 1/2 tsp fine salt. In a separate bowl, lightly beat 1 large egg and combine with 1 cup ice-cold sparkling water. Pour the cold egg-water into the dry ingredients and stir gently with chopsticks or a fork just until combined — lumps are okay. Do not overmix; batter should be slightly lumpy and cold.

Coat asparagus: Working in batches to avoid crowding, dredge the floured asparagus once more briefly through a very light dusting of flour (shake off excess), then dip each spear into the tempura batter, allowing excess to drip back into the bowl.

Fry until crisp: Carefully lower battered spears into the hot oil (350°F / 175°C) in small batches — 3–4 spears at a time depending on pot size. Fry 2½–3½ minutes until batter is pale golden and crisp. Turn if needed for even color. Avoid over-browning; tempura should be light and airy.

Drain and season: Remove with a slotted spoon or spider and transfer to a wire rack set over a baking sheet or paper towels to drain. Immediately sprinkle lightly with remaining 1 tsp fine salt while still hot so it adheres.

Keep warm (optional): If making multiple batches, keep finished spears loosely tented in a single layer in a low oven (200°F / 95°C) while you finish frying. Do not stack, which will steam and sog the batter.

Plate and garnish: Arrange asparagus tempura on a serving platter. Spoon or pipe wasabi mayonnaise into a small dipping bowl. Sprinkle 1 tsp togarashi over the tempura lightly (or over the mayo for contrast) to add citrusy heat and color. Serve immediately with lemon wedges on the side for optional brightening.

Notes: Tempura is best eaten immediately for maximum crispness. Leftovers can be briefly re-crisped in a 375°F (190°C) oven for 5–6 minutes, but texture will not fully match fresh-fried.