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Sweet potato tempura on a plate with dipping sauce.

Sweet Potato Tempura

Keri Bevan
This egg free sweet potato tempura is light and crispy and so delicious. Serve it as a main dish over ramen or rice, or as a starter for a Japanese inspired meal. It takes under 30 minutes to make this classic Japanese dish.
4.96 from 42 votes
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Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Course Appetizer, Snack
Cuisine Japanese
Servings 4 servings
Calories 448 kcal

Ingredients
  

  • 2 cups vegetable oil
  • 1 sweet potato cut into ¼ inch slices
  • 1 cup rice flour
  • ¼ cup all purpose flour
  • 1 teaspoon baking powder
  • 1 cup ice cold carbonated water
  • ½ teaspoon salt

Sweet Potato Tempura Sauce

  • 3 tablespoons tamari or soy sauce
  • 3 tablespoons water
  • 3 tablespoons mirin or rice wine vinegar
  • 2 tablespoons maple syrup
  • 1 garlic clove minced
  • 2 teaspoons Sriracha sauce optional

Instructions
 

  • Make the dipping sauce by mixing together all the ingredients in a small bowl. Set aside while you make the sweet potato tempura.
  • Heat the oil in a deep pan, wok or deep fryer until it's shimmering. * see note 1
  • Clean the skin of the sweet potato. No need to peel it. Pat it dry and slice into ¼ inch rounds.
  • Whisk together the rice flour, all purpose flour, baking powder, water, and salt in a bowl by hand. Do not over mix the batter. A few lumps are fine. * see note 2
  • Using tongs, one by one, coat the sweet potato pieces in the batter and carefully drop them into the oil. Make sure to leave space between each piece.
  • Cook the sweet potato tempura for 4-5 minutes, turning once at the halfway point.
  • Using tongs or a slotted spoon, remove the sweet potato pieces from the oil and transfer to a paper towel lined plate or a cooling rack with paper towels underneath it.

Notes

  1. Test the oil by carefully dropping a small piece of batter into the oil. It should descend slightly, and then pop back up and begin to bubble.
  2. Make the batter thinner if you like, by adding an additional ¼ cup of water.

Nutrition

Calories: 448kcalCarbohydrates: 69gProtein: 4gFat: 110gSaturated Fat: 17gPolyunsaturated Fat: 63gMonounsaturated Fat: 25gTrans Fat: 1gSodium: 591mgPotassium: 328mgFiber: 3gSugar: 16gVitamin A: 8022IUVitamin C: 3mgCalcium: 104mgIron: 1mg
Keyword sweet potato tempura
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