Experience the delightful combination of crispy tempura and comforting udon noodles in this delicious Tempura Udon recipe. Perfect for a cozy meal, this dish brings together the rich flavors of dashi broth with the satisfying texture of tempura.
Some ingredients in this recipe might not be commonly found in every household. Dashi broth is a Japanese stock made from dried fish and seaweed, which can be found in the Asian section of most supermarkets. Mirin is a sweet rice wine used in Japanese cooking, also available in the Asian aisle. Fresh or frozen udon noodles can be found in the refrigerated or frozen section.

Ingredients For Tempura Udon Recipe
All-purpose flour: The base for the tempura batter.
Cold water: Helps create a light and crispy tempura.
Egg: Adds richness to the tempura batter.
Salt: Enhances the flavor of the tempura.
Vegetable oil: Used for frying the tempura.
Udon noodles: Thick, chewy noodles that are the base of the dish.
Dashi broth: A flavorful Japanese stock that forms the soup base.
Soy sauce: Adds umami and saltiness to the broth.
Mirin: A sweet rice wine that balances the flavors in the broth.
Sugar: Adds a touch of sweetness to the broth.
Green onions: Fresh garnish that adds a pop of color and flavor.
Technique Tip for Tempura Udon
When preparing tempura batter, ensure that the water is ice-cold. This helps create a light and crispy texture. Additionally, avoid overmixing the batter; a few lumps are perfectly fine and will contribute to the desired crispiness.
Suggested Side Dishes
Alternative Ingredients
all-purpose flour - Substitute with rice flour: Rice flour will give the tempura a lighter and crispier texture, which is more traditional for tempura batter.
cold water - Substitute with sparkling water: Sparkling water can make the batter lighter and crispier due to the carbonation.
large egg - Substitute with club soda: If you prefer a vegan option, club soda can help achieve a similar light and airy batter.
vegetable oil - Substitute with canola oil: Canola oil has a high smoke point and neutral flavor, making it a good alternative for frying.
fresh or frozen udon noodles - Substitute with soba noodles: Soba noodles can provide a different but equally delicious texture and flavor.
dashi broth - Substitute with chicken broth: If you can't find dashi, chicken broth can be used, though it will alter the flavor profile slightly.
soy sauce - Substitute with tamari: Tamari is a gluten-free alternative to soy sauce with a similar taste.
mirin - Substitute with dry sherry: Dry sherry can mimic the sweetness and acidity of mirin.
sugar - Substitute with honey: Honey can add a similar sweetness with a slightly different flavor profile.
green onions - Substitute with chives: Chives can provide a similar mild onion flavor and a pop of color.
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How to Store or Freeze This Dish
- Allow the tempura to cool completely before storing. This prevents condensation, which can make the batter soggy.
- Place the cooled tempura in an airtight container. If stacking, separate layers with parchment paper to avoid sticking.
- Store the tempura in the refrigerator for up to 2 days. For longer storage, consider freezing.
- For freezing, lay the tempura pieces on a baking sheet in a single layer. Freeze until solid, then transfer to a freezer-safe bag or container.
- When ready to use, reheat the tempura in an oven at 375°F (190°C) for about 10-15 minutes or until crispy.
- For the udon noodles, store any leftovers in an airtight container in the refrigerator for up to 3 days.
- To reheat the udon noodles, immerse them in boiling water for a minute or microwave with a splash of water to prevent drying out.
- The dashi broth can be stored separately in an airtight container in the refrigerator for up to 3 days.
- For freezing the dashi broth, pour it into freezer-safe containers or ice cube trays for easy portioning. Freeze for up to 3 months.
- When ready to serve, thaw the dashi broth in the refrigerator overnight or reheat directly from frozen over low heat.
- Combine the reheated udon noodles and dashi broth in bowls, then top with reheated tempura and fresh green onions before serving.
How to Reheat Leftovers
- Preheat your oven to 375°F (190°C). Place the tempura on a baking sheet lined with parchment paper. Bake for 10-15 minutes until crispy, flipping halfway through.
- For the udon noodles, bring a pot of water to a gentle boil. Submerge the noodles for 1-2 minutes until heated through. Drain and set aside.
- Reheat the dashi broth in a pot over medium heat until it reaches a gentle simmer. Do not let it boil vigorously to maintain its delicate flavors.
- Combine the reheated udon noodles and dashi broth in a bowl. Top with the crispy tempura and garnish with freshly sliced green onions.
- Alternatively, you can use a microwave to reheat the udon noodles and dashi broth. Place the noodles in a microwave-safe bowl, cover with a damp paper towel, and microwave on high for 1-2 minutes. Heat the broth separately in a microwave-safe container for 2-3 minutes until hot. Combine and top with reheated tempura.
- For an extra touch, you can lightly spray the tempura with a bit of vegetable oil before reheating in the oven to enhance its crispiness.
Best Tools for Making Tempura Udon
Mixing bowl: Use this to prepare the tempura batter by combining flour, cold water, egg, and salt.
Whisk: This helps to gently mix the tempura batter without overmixing.
Frying pan: Heat the vegetable oil in this to fry the tempura.
Paper towels: Use these to drain excess oil from the fried tempura.
Pot: Bring the dashi broth to a boil in this.
Measuring cups: Measure out the flour, water, soy sauce, and mirin accurately with these.
Measuring spoons: Use these to measure the salt and sugar.
Tongs: These are useful for dipping vegetables or shrimp into the batter and placing them in the hot oil.
Strainer: Drain the cooked udon noodles with this.
Knife: Slice the green onions with this.
Cutting board: Use this as a surface to slice the green onions.
Serving bowls: Divide the cooked udon noodles into these before pouring the broth and adding the tempura.
How to Save Time on This Recipe
Prepare ingredients in advance: Chop and measure all ingredients before starting to cook to streamline the process.
Use pre-made dashi broth: Save time by using store-bought dashi broth instead of making it from scratch.
Cook noodles ahead: Boil the udon noodles in advance and store them in the fridge to save time during assembly.
Batch fry tempura: Fry all tempura at once and keep them warm in the oven while you prepare the rest of the dish.
Simplify toppings: Use pre-sliced green onions and other ready-to-use toppings to cut down on prep time.

Tempura Udon Recipe
Ingredients
Tempura Ingredients
- 1 cup All-purpose flour
- 1 cup Cold water
- 1 large Egg
- 1 pinch Salt
- 2 cups Vegetable oil for frying
Udon Ingredients
- 4 packs Udon noodles fresh or frozen
- 4 cups Dashi broth
- 2 tablespoon Soy sauce
- 2 tablespoon Mirin
- 1 teaspoon Sugar
- 2 stalks Green onions sliced
Instructions
- 1. Prepare the tempura batter by mixing the flour, cold water, egg, and salt in a bowl. Do not overmix.
- 2. Heat the vegetable oil in a frying pan over medium-high heat.
- 3. Dip vegetables or shrimp into the batter and fry until golden brown. Drain on paper towels.
- 4. Cook the udon noodles according to the package instructions. Drain and set aside.
- 5. In a pot, bring the dashi broth to a boil. Add soy sauce, mirin, and sugar. Stir to combine.
- 6. Divide the cooked udon noodles into bowls. Pour the hot broth over the noodles.
- 7. Top with tempura and sliced green onions. Serve immediately.
Nutritional Value
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