Why is my tempura batter heavy?

You likely overmixed the batter or used warm water. Mix minimally and use ice-cold sparkling water.

What other vegetables work?

Bell peppers, eggplant, green beans, lotus root, and shiso leaves are all traditional choices.

Assorted vegetable tempura arranged on a plate with dipping sauce

Lightly battered and fried vegetables with a delicate, shattering crunch

Japanese Vegetable Tempura

Name: Japanese Vegetable Tempura
Prep time: 20 min
Cook time: 15 min
Total time: 35 min
Yield: 4 servings
Cuisine: Asian, Japanese
Ingredients: 1 sweet potato, sliced 1/4-inch thick; 1 cup broccoli florets; 1 zucchini, sliced on the bias; 6 shiitake mushrooms, stemmed; 1 cup all-purpose flour; 1 cup ice-cold sparkling water; 1 egg yolk (or omit for vegan); Vegetable oil for deep frying; Soy sauce, mirin, and dashi for tentsuyu

35 minMedium

Prep Time

20 min

Cook Time

15 min

Total Time

35 min

Servings

4 servings

Difficulty

Medium

Cost

Moderate

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Japanese Vegetable Tempura

Lightly battered and fried vegetables with a delicate, shattering crunch

Assorted vegetables dipped in an ice-cold batter and fried until impossibly light and crispy. Served with a warm tentsuyu dipping sauce for an authentic Japanese experience.

20m

Prep Time

15m

Cook Time

35m

Total Time

Servings

Medium

Difficulty

Moderate $$

Cost

Asian Cuisine Japanese Cuisine Side Dish Appetizer Vegetarian Vegan Dairy-Free

Sarah Chen

December 7, 2021(Updated April 13, 2026)

Tempura is a study in contrast — an almost impossibly light, lacy batter encasing tender vegetables, creating a crunch so delicate it practically dissolves on your tongue. The technique originated in 16th-century Japan and has been perfected over centuries into one of the most elegant forms of fried food.

The secret to great tempura is in what you do not do: do not overmix the batter, do not let it warm up, and do not crowd the oil. A few lumps in the batter are desirable — they create the characteristic irregular, lacey coating. Use the freshest vegetables you can find and serve immediately for the full tempura experience.

Ingredients

1 sweet potato, sliced 1/4-inch thick
1 cup broccoli florets
1 zucchini, sliced on the bias
6 shiitake mushrooms, stemmed
1 cup all-purpose flour
1 cup ice-cold sparkling water
1 egg yolk (or omit for vegan)
Vegetable oil for deep frying
Soy sauce, mirin, and dashi for tentsuyu

HeatTool

Test Kitchen Pick

Deep Fry Thermometer

Helpful Tool

Why a fry thermometer helps here

Poutine quality depends on stable oil temperature across two fry stages. A simple clip-on thermometer is the easiest way to get crisp fries instead of greasy ones.

This recipe is far more repeatable when your oil temperature stays in range.

Keeps first and second fry temperatures accurate
Helps fries stay crisp under hot gravy

For fry-first recipes, temperature control matters more than almost any other upgrade.

Shop deep fry thermometer options for this recipe

Instructions

1
Heat 3 inches of vegetable oil in a deep pot or Dutch oven to 350°F. Line a sheet pan with a wire rack.
2
Prepare tentsuyu dipping sauce by combining 1 cup dashi, 3 tablespoons soy sauce, and 2 tablespoons mirin. Warm gently.
3
Just before frying, make the batter: combine flour and ice-cold sparkling water (and egg yolk if using) with a few quick strokes. Do not overmix — lumps are good.
4
Dip vegetables one at a time into batter, letting excess drip off. Carefully lower into hot oil.
5
Fry in small batches for 2-3 minutes until light golden and crispy. Do not crowd the oil. Transfer to the wire rack.
6
Serve immediately with warm tentsuyu sauce and grated daikon radish.

Serving Suggestions

Ways to Serve This Dish

Serve over steamed jasmine or sticky rice
Pair with a side of pickled vegetables or kimchi
Add a drizzle of sesame oil and toasted sesame seeds for extra flavor
Arrange on a platter for easy sharing at your next gathering

Substitutions

Sparkling waterIce-cold vodka (for extra crispness)

Vodka evaporates faster than water, creating an even crispier result.

All-purpose flourRice flour or tempura flour

Rice flour creates a lighter coating; tempura flour is pre-mixed for convenience.

DashiVegetable broth

For a fully vegan tentsuyu sauce.

DepthPantry

Test Kitchen Pick

Mirin

Helpful Pantry Staple

Why the mirin matters

Mirin quietly rounds out sauces like this with sweetness and gloss. It is one of those ingredients you notice more when it is missing.

This adds balance, not just sweetness.

Rounds out saltier sauces
Useful in glazes, noodle dishes, and marinades

A bottle of mirin becomes surprisingly versatile once it is in the pantry.

Shop mirin for this recipe

Tips & Storage

Pro Tips

Keep everything cold: use ice water, chill the flour, and even put the mixing bowl over ice.
Drop small bits of batter into the oil to test temperature — they should sink briefly then rise and sizzle.
Skim oil between batches to remove stray bits of batter.

Storage

Tempura is best eaten immediately. Leftovers can be refrigerated for 1 day.

Reheating

Place on a wire rack in a 400°F oven for 5 minutes to re-crisp. Never microwave tempura.

Nutrition Facts

Per serving (1 plate) · 4 servings

Calories260

LowModerateHigh

A moderate-calorie serving · based on a 2,000 cal daily diet

Protein5g

Carbohydrates34g

Fat12g

Fiber3g

Sugar4g

Sodium480mg

Nutritional values are approximate and may vary based on specific ingredients and preparation methods.

Frequently Asked Questions

Why is my tempura batter heavy?: You likely overmixed the batter or used warm water. Mix minimally and use ice-cold sparkling water.
What other vegetables work?: Bell peppers, eggplant, green beans, lotus root, and shiso leaves are all traditional choices.

Explore More

More Asian Recipes More Japanese Recipes More Side Dish More Appetizer Vegetarian Recipes Vegan Recipes Dairy-Free Recipes Stovetop Recipes

About Sarah Chen

Sarah Chen is a professional recipe developer and food editor with over a decade of experience in test kitchens and food media. She trained at the Culinary Institute of America before spending six years developing and testing recipes for national food publications, where she honed her ability to translate restaurant techniques into approachable home cooking. At RecipePool, Sarah leads recipe development, ensuring every dish is tested at least three times for clarity, accuracy, and genuine deliciousness. When she is not in the kitchen, she is browsing farmers markets and collecting vintage cookbooks.

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Instructions

1
Heat 3 inches of vegetable oil in a deep pot or Dutch oven to 350°F. Line a sheet pan with a wire rack.
2
Prepare tentsuyu dipping sauce by combining 1 cup dashi, 3 tablespoons soy sauce, and 2 tablespoons mirin. Warm gently.
3
Just before frying, make the batter: combine flour and ice-cold sparkling water (and egg yolk if using) with a few quick strokes. Do not overmix — lumps are good.
4
Dip vegetables one at a time into batter, letting excess drip off. Carefully lower into hot oil.
5
Fry in small batches for 2-3 minutes until light golden and crispy. Do not crowd the oil. Transfer to the wire rack.
6
Serve immediately with warm tentsuyu sauce and grated daikon radish.

Tips & Storage

Pro Tips

Keep everything cold: use ice water, chill the flour, and even put the mixing bowl over ice.
Drop small bits of batter into the oil to test temperature — they should sink briefly then rise and sizzle.
Skim oil between batches to remove stray bits of batter.

Storage

Tempura is best eaten immediately. Leftovers can be refrigerated for 1 day.

Reheating

Place on a wire rack in a 400°F oven for 5 minutes to re-crisp. Never microwave tempura.

Japanese Vegetable Tempura

Japanese Vegetable Tempura

Japanese Vegetable Tempura