Mixed Vegetable Tempura Recipe
Introduction
Mixed Vegetable Tempura is a light and crispy Japanese dish featuring assorted fresh vegetables coated in a delicate batter and fried to perfection. It’s a delightful way to enjoy a variety of textures and flavors with a savory dipping sauce.

Ingredients
- 1/2 small red pepper
- 1 small sweet potato
- 6-7 oyster mushrooms
- 6-7 asparagus stalks
- 1 cup all-purpose flour
- 1/4 cup corn flour
- 1/4 cup rice flour
- 1 1/4 cup cold sparkling water
- 1 teaspoon salt
- 2 tablespoons soy sauce
- 1 tablespoon mirin
- 1/2 tablespoon rice vinegar
- 1 teaspoon spicy sesame oil
Instructions
- Step 1: Wash and prepare the vegetables. Trim the hard bottom ends of the asparagus, slice the sweet potato, leave the oyster mushrooms whole, and cut the red pepper into thick slices.
- Step 2: In a large mixing bowl, combine all the dry ingredients: all-purpose flour, corn flour, rice flour, and salt.
- Step 3: Slowly pour in the cold sparkling water while stirring gently. Avoid whisking; it’s fine if some dry flour pockets remain. This texture helps make the tempura extra crispy. Adjust the amount of water to achieve a batter consistency similar to heavy cream.
- Step 4: Heat enough oil in a small pan for deep-frying. The oil is ready when a small drop of batter bubbles immediately upon contact.
- Step 5: Dip one type of vegetable into the batter to coat it evenly, then carefully place it into the hot oil.
- Step 6: Deep-fry the vegetables for a few minutes until cooked through and golden. Remove and drain on paper towels to remove excess oil.
- Step 7: Repeat the frying process with the remaining vegetables.
- Step 8: Prepare the dipping sauce by mixing soy sauce, mirin, rice vinegar, and spicy sesame oil in a small bowl. Optionally, add sesame seeds for added texture.
- Step 9: Serve the tempura vegetables warm on a plate alongside the dipping sauce.
Tips & Variations
- Use cold sparkling water for the batter to keep it light and airy, resulting in a crispier texture.
- Feel free to experiment with other vegetables like zucchini, green beans, or broccoli florets.
- Serve with a pinch of sea salt or a squeeze of lemon for an extra flavor boost.
Storage
Tempura is best enjoyed immediately for maximum crispiness. If storing leftovers, place them in an airtight container in the refrigerator for up to one day. Reheat in a hot oven or toaster oven to help restore some crunch; avoid microwaving as it can make the tempura soggy.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use regular water instead of sparkling water?
Using sparkling water helps create a lighter, crispier batter due to its carbonation. If you don’t have it, regular cold water can be used, but the texture might be slightly less crispy.
What oil is best for frying tempura?
Neutral oils with a high smoke point, such as vegetable oil, canola oil, or peanut oil, work best for deep-frying tempura to achieve a crisp texture without overpowering flavors.
PrintMixed Vegetable Tempura Recipe
This Mixed Vegetable Tempura recipe features a light and crispy batter coating a colorful medley of fresh vegetables including red pepper, sweet potato, oyster mushrooms, and asparagus. Paired with a flavorful soy-based dipping sauce infused with mirin, rice vinegar, and spicy sesame oil, this dish is perfect as a delightful appetizer or snack. The tempura batter is made using a combination of all-purpose, corn, and rice flours mixed with cold sparkling water to achieve the perfect crispy texture upon deep-frying.
- Prep Time: 15 minutes
- Cook Time: 15 minutes
- Total Time: 30 minutes
- Yield: 4 servings 1x
- Category: Appetizer
- Method: Frying
- Cuisine: Japanese
- Diet: Vegetarian
Ingredients
Vegetables
- 1/2 small red pepper
- 1 small sweet potato
- 6–7 oyster mushrooms
- 6–7 asparagus stalks
Tempura Batter
- 1 cup all-purpose flour
- 1/4 cup corn flour
- 1/4 cup rice flour
- 1 1/4 cup cold sparkling water (add slowly to get desired consistency)
- 1 teaspoon salt
Dipping Sauce
- 2 tablespoons soy sauce
- 1 tablespoon mirin
- 1/2 tablespoon rice vinegar
- 1 teaspoon spicy sesame oil
Instructions
- Prepare the Vegetables: Wash all vegetables thoroughly. Trim the hard bottom parts of the asparagus, slice the sweet potato into thin rounds, leave the oyster mushrooms whole, and cut the red pepper into thick slices.
- Mix Dry Ingredients: In a large mixing bowl, combine the all-purpose flour, corn flour, rice flour, and salt for the tempura batter.
- Add Sparkling Water: Slowly pour in the cold sparkling water while gently mixing. Avoid over-whisking; it’s okay if some dry flour pockets remain, as this helps create extra crispy tempura.
- Check Batter Consistency: The batter should be light and thick enough to coat vegetables, similar to heavy cream consistency. Adjust sparkling water quantity accordingly.
- Heat Oil for Frying: In a small pan, heat enough oil for deep-frying. Test if the oil is hot enough by dropping a small amount of batter to see if it bubbles immediately.
- Fry Vegetables in Batches: Coat one type of vegetable in the batter and carefully transfer them into hot oil. Deep-fry for a couple of minutes until cooked through and golden.
- Drain Excess Oil: Remove fried vegetables and place them on paper towels to absorb excess oil.
- Repeat Frying: Repeat frying process with remaining vegetables in batches to avoid overcrowding.
- Make Dipping Sauce: In a small bowl, combine soy sauce, mirin, rice vinegar, and spicy sesame oil. Optionally, add sesame seeds for extra texture.
- Serve: Arrange all tempura vegetables on a serving plate and serve immediately with the dipping sauce while still warm and crispy.
Notes
- Using cold sparkling water in the batter helps to create a lighter, crispier tempura crust.
- Do not overmix the batter; some lumps are desirable for crispiness.
- Maintain the oil temperature to ensure the vegetables cook evenly without absorbing too much oil.
- Use paper towels to drain fried vegetables for a less greasy texture.
- Serve tempura immediately as it is best enjoyed fresh and crispy.
Keywords: Mixed Vegetable Tempura, Tempura Batter, Japanese Tempura, Vegetable Fry, Crispy Tempura, Vegetarian Appetizer

