Crispy Tempura Batter Recipe: The Secret to Perfect Fried Veggies

If you’ve ever ordered tempura at a Japanese restaurant and wondered why the batter comes out so impossibly crisp, the answer is simpler than you expect. This homemade tempura batter uses just three ingredients to produce a thin, shattering coating on vegetables, shrimp, or fish. Carbonation from ice-cold club soda and the low-protein profile of cornstarch work together to keep the crust airy and prevent the dense, chewy coating that trips up most home cooks. The batter takes about two minutes to mix, making it an easy option for a weeknight dinner or a crowd-pleasing addition to any spread.

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Tempura is most often served in Japanese restaurants. Fresh vegetables, such as slices of sweet potatoes, zucchini, squash, onions, mushrooms, and more, are deep-fried in a crispy batter. If you go to a Japanese restaurant or some Chinese restaurant, you will find tempura-inspired items on the menu.

Tempura originated around the 16th century when Portuguese missionaries were in Japan. They introduced a peixinhos da horta dish, eaten during the meatless “Ember days.” The dish eventually became tempura, which comes from the Latin word “tempora,” meaning “time of fasting.”

Why This Recipe Works

The two choices that make this batter work are club soda in place of plain water and cornstarch alongside the flour. Club soda is carbonated, and those bubbles stay trapped in the batter until it hits the hot oil. When they expand and escape during frying, they create tiny air pockets in the crust, producing the light, almost lacy texture that distinguishes good tempura from a heavy, doughy coating.

Cornstarch is lower in protein than all-purpose flour, and protein is what develops into gluten when a batter is mixed. Less gluten means a lighter, crispier crust. The combination of flour for structure and cornstarch for crispness produces a batter that fries up significantly lighter than one made with all-purpose flour alone.

The third factor is restraint. Overmixing a batter develops gluten, even in a low-protein formula, turning a crisp coating into a chewy one. Lumps in the batter are not a problem. They cook out in the oil, and a lumpy batter is a sign you have not overmixed.

Ingredients for tempura batter

• All-purpose flour – Forms the base of the batter, providing structure
• Cornstarch – Helps create a light, crispy texture when fried
• Club soda – Ice-cold bubbles add airiness and lightness to the batter

Ingredient Notes

• Seltzer water works as a direct substitute for club soda and performs identically.
• Specialty tempura flour blends (which typically contain rice flour, potato starch, or cornstarch) can replace the flour-and-cornstarch combination entirely. Follow the package ratio.
• Cake flour is a good substitute for all-purpose flour if you want a finer, more delicate crust. Avoid bread flour, which has too much protein and will produce a dense, chewy result.

How to make tempura batter

There are only three simple steps to make the best tempura batter:

1. Place the flour and cornstarch in a bowl. Whisk to combine.
2. Add the club soda.
3. Stir until just combined. You can use a spoon or chopsticks. Do not over-stir; it is okay to have some lumps.

What do you need to deep fry?

Ideally, you should have a small deep fryer. I love my t-Fal deep fryer. It does a great job of keeping the hot oil at the same temperature. It also has a handy strainer so you can strain out the cooked bits and reuse your oil.

If you don’t have a deep fryer, you can use a deep pot and a thermometer to keep the oil at the right temperature.

I also recommend using a wire rack to drain what you have just cooked instead of using a paper towel. When you put hot food on paper towels, it tends to steam, and you lose the crispy crust you just spent time working on.

What should you dip into tempura batter?

Root vegetables such as sweet potatoes, yams, daikon radish, eggplant, and onions are great for tempura. Broccoli florets, broccolini, and carrots are also perfect to deep-fat fry with tempura batter. Some Japanese favorites are shiso leaves and lotus roots.

How to make Japanese tempura

1. Heat oil to 350°F in a deep fryer or heavy-bottomed pan.
2. Dip vegetables, meat, or fish into the batter and let the excess drain off.
3. Carefully place the tempura-battered food into the hot oil.
4. Fry until golden brown and done.
5. Drain the fried tempura on a wire rack over a baking sheet.

What should you serve tempura vegetables with?

You may want to dip your tempura vegetables into soy sauce, wasabi, or even ponzu sauce. Some people like to create a dipping sauce with equal parts of soy sauce and dry sherry.

How to store leftover tempura

To store leftover tempura for best results, follow these steps:

1. Cool down: Allow the tempura to cool completely at room temperature. Do not cover it while it’s still warm; this will trap steam and make the tempura soggy.
2. Absorb excess oil: Place the cooled tempura on paper towels to absorb any excess oil.
3. Use an airtight container: Choose one large enough to accommodate the tempura without squashing or overcrowding the pieces.
4. Layer with parchment paper: Place a sheet of parchment paper or wax paper at the bottom of the container. Arrange the tempura in a single layer, ensuring the pieces do not touch or overlap. If you have more tempura to store, place another sheet of parchment paper over the first layer, then continue stacking the tempura this way.
5. Seal and refrigerate: Close the airtight container and store it in the refrigerator. Consume the leftover tempura within 1-2 days for the best taste and texture.

How to reheat tempura for the best results

To reheat the tempura and maintain its crispiness:

1. Preheat your oven to 350°F (175°C).
2. Place a wire rack on a baking sheet and arrange the tempura on the rack in a single layer.
3. Heat the tempura for 5-10 minutes or until warmed through and crispy.
4. Keep an eye on the tempura to avoid overcooking or burning.

Love Japanese food? Try these favorite recipes

• Shrimp Tempura Recipe
• Japanese Katsu Recipe
• Hibachi Steak Recipe
• Hibachi Fried Rice
• Hibachi Restaurant Salad Dressing
• Panko Style Breadcrumbs

Best Chinese food recipes

• Chicken Lettuce Wraps
• General Tso Chicken
• Chinese Pork Spareribs
• Mongolian Beef Recipe
• Hunan Chicken Recipe
• Crispy Sweet and Sour Chicken
• Egg Drop Soup Chinese

Be sure to check out more of my easy Asian recipes and how-to-cook guides.

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Japanese Tempura Batter

A light, crispy 3-ingredient tempura batter made with club soda and cornstarch. Ready in 2 minutes, perfect for vegetables, shrimp, and fish.

Author: Stephanie Manley

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4.96 from 71 votes

Servings : 12

Prep Time10 minutes minutes

Cook Time10 minutes minutes

Total Time20 minutes minutes

Ingredients

 

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• 1 2/3 cups all-purpose flour
• 1 1/2 cups cornstarch
• 2 cups club soda

Instructions

1. To make the batter, mix all the ingredients together in a bowl.
2. To use the batter, heat vegetable oil to 350°F in a deep fryer or heavy-bottomed pot. Dip vegetables, seafood, or anything else you desire into the batter, and deep fry until pale golden brown. Drain the tempura on a wire rack.

Video

Notes

• Keep everything cold. The batter should be mixed and used immediately. As batter warms, carbonation dissipates and gluten develops faster, both of which produce a heavier crust. If you are frying multiple batches, set the mixing bowl over a larger bowl filled with ice to keep the batter cold throughout the process.
• Fry in small batches. Adding too many pieces at once drops the oil temperature. When the oil cools below about 325 degrees F, the batter absorbs oil instead of crisping, and the finished texture turns greasy. Allow the oil to return to 350 degrees F between each batch before adding more food.
• Pat food dry before battering. Moisture on the surface of shrimp, fish, or vegetables repels batter and prevents it from adhering. A quick pat with a paper towel gives the coating something to grip.
• A wire rack is not optional. Paper towels soften tempura within a couple of minutes. A wire rack lets air circulate underneath the fried pieces and keeps the crust intact while you finish frying the remaining batches.

Nutrition

Calories: 142kcal | Carbohydrates: 28g | Protein: 2g | Fat: 1g | Saturated Fat: 0g | Cholesterol: 0mg | Sodium: 19mg | Potassium: 40mg | Fiber: 1g | Sugar: 0g | Vitamin A: 105IU | Vitamin C: 1.7mg | Calcium: 39mg | Iron: 1.4mg

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Course: Appetizer

Cuisine: Japanese