Homemade Japanese Tempura Rice Bowl (Tendon)
Enjoy a crispy and satisfying Japanese tempura rice bowl at home. This dish features light, golden-fried seafood and vegetables served over fluffy white rice with a sweet, savory sauce.
Tendon, or tempura donburi, is a beloved Japanese comfort food that balances texture and flavor perfectly. By using chilled batter and precise frying techniques, you can achieve that signature airy, crispy coating on your favorite shrimp and seasonal vegetables. This homemade version emphasizes a balanced, umami-rich dipping sauce that pulls the entire dish together into a comforting, delicious meal.
Ingredients
- 4 large shrimp
- 1 eggplant
- 100 g pumpkin
- 50 g asparagus
- 200 g tempura flour
- 150 ml cold water
- 2 ice cubes
- 200 ml water
- 1 piece dried kelp (kombu)
- 2 tbsp light soy sauce
- 1 tbsp rice wine
- 1 tbsp sugar
- 500 ml vegetable oil
- 2 bowls cooked white rice
Instructions
- 1Prep the Vegetables

Wash the asparagus, small pumpkin, and eggplant thoroughly. Slice the vegetables into uniform, bite-sized pieces suitable for even frying. Ensure the pumpkin is sliced into manageable portions for tempura, and arrange everything on a clean cutting board ready for coating.
Tip: Pat the vegetables dry with a paper towel before coating in flour to ensure the batter adheres properly. - 2Prepare the Kelp Stock

Place a piece of dried kelp (kombu) into a pot filled with cold water. Allow it to simmer gently on low heat to extract the umami flavor, forming the foundational base for the tempura dipping sauce.
Tip: Do not let the water reach a rolling boil, as this can make the stock bitter; keep it at a gentle simmer. - 3Season the Sauce

Add rice wine, light soy sauce, and sugar to the simmering kelp stock. Stir the mixture gently until the sugar has completely dissolved and the flavors are well combined, creating a sweet and savory sauce base.
Tip: Adjust the sweetness and saltiness by tasting a small amount of the sauce as you stir. - 4Prepare Tempura Batter

Combine tempura flour and water in a mixing bowl. Add a few ice cubes to the mixture and gently combine. Keeping the batter cold is the secret to achieving a light, crispy tempura coating.
Tip: Do not overmix the batter; it should remain slightly lumpy to stay crispy when fried. - 5Fry the Tempura

Lightly coat the shrimp pieces in dry flour, then dip them into the chilled tempura batter. Carefully lower the coated shrimp into a pot of hot oil and deep-fry until golden brown and crispy.
Tip: Fry in small batches to maintain the oil temperature and ensure even crispiness. - 6Fry the eggplant

Dip the eggplant slices into the prepared tempura batter, ensuring they are evenly coated. Carefully place them into hot oil and fry until they achieve a crispy, golden-brown texture.
Tip: Maintain a consistent oil temperature to ensure the tempura becomes crispy rather than greasy.