récolte / RAO-2

Reheating Shrimp Tempura

Reheat 4 refrigerated, pre-cooked shrimp tempura sticks in an RAO-2 (which has no temperature settings) with an initial setting of 10 minutes, the same as the manual's guide for reheating fried deli foods. Do not use oil or aluminum foil.

Serves 1〜2 / 4 refrigerated shrimp tempura sticks (total 120g)Seafood DishesOriginal
An illustration of 4 pieces of reheated shrimp tempura arranged on a plate
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Initial Heating Settings

Reheating for the First TimeTimer DialNo temperature setting / 10min

After 5 minutes, turn the timer dial back to 0 to stop it, pull out the basket, and place it on a trivet. Flip the 4 pieces over once and switch their front and back positions. Remove any pieces where the coating has started to burn; do not return them to the basket, and set them aside without eating them. Return the remaining pieces to the inner rack, securely place the basket back into the unit, turn the timer dial once to a setting of 10 minutes or more, then turn it back to the remaining 5 minutes and resume cooking. If you notice smoke, an unusual odor, or any other abnormalities, immediately turn the timer dial back to 0, unplug the unit, and follow the instructions in the user manual.

Instructions for preheating, mid-cooking checks, and how to check for doneness are included in the preparation instructions.

Reheat the shrimp tempura—which has been thoroughly cooked through after purchase or preparation—from a chilled state according to the product label. This is not the traditional tempura method of coating raw shrimp in batter and frying it.

Check Before Cooking
  • Set the inner rack in the basket and make sure the rubber covers are attached to the inner rack. Place the unit on a flat surface while it is cool, verify that the timer dial is set to 0, and then plug it in. Do not preheat the unit or adjust the temperature settings. When setting the timer to 10 minutes or less, first turn the timer dial to a position indicating 10 minutes or more, then turn it back to the desired time (User Manual, pp. 6〜7).
  • Use 4 pieces of pre-cooked shrimp tempura (a total of 120g) that have been heated all the way through after purchase or cooking, with a maximum batter-covered body thickness of 18mm or less. Store in the refrigerator according to the product label; use only items that are within their use-by date and free of sauce or moisture. Do not substitute with raw shrimp, uncooked tempura batter, frozen products, mixed platters, or kakiage.
  • Do not use any additional oil. Do not line the basket with aluminum foil, parchment paper, or a heat-resistant container; place the food directly on the inner basket. Do not use items where the coating has peeled off or is wet.
  • Arrange the shrimp tempura in a single layer so they do not overlap or touch each other. Do not place the tails near the heating element, do not block the inner mesh, and do not place them beyond the MAX line. Do not start heating unless all 4 pieces fit inside. Since the official guidelines do not specify quantities, do not estimate cooking times based on the number of pieces or weight.
  • Do not leave the area while cooking, and do not block the air intake or exhaust vents. Do not use the appliance if batter residue has fallen inside. If you notice smoke, a burning smell, or any other abnormalities, stop heating and discontinue use in accordance with the instruction manual.
  • Keep continuous use below 30 minutes. Do not run the appliance empty for 10 minutes or longer.

Instructions

0 / 7 Complete
  1. 01

    Check the refrigeration status and quantity

    Check the storage instructions and use-by date on the product label. Weigh 4 refrigerated, fully cooked shrimp tempura pieces and confirm that they total 120g and that each body is no more than 18mm thick including the coating. Do not use pieces with sauce, moisture, or substantially detached coating. Do not add oil.

    Weigh 4 refrigerated, pre-cooked shrimp tempura sticks and check the weight and thickness listed in the ingredients section.
    Discuss these instructions
  2. 02

    Prepare the main unit

    Set the inner rack in the basket and make sure the rubber covers are attached to the inner rack. Place the cooled unit on a flat surface, verify that the timer dial is set to 0, and then plug it in. Do not preheat, and do not adjust the temperature settings.

    Discuss these instructions
  3. 03

    Arrange them in a single layer without using a sheet

    Do not use aluminum foil, parchment paper, or heat-resistant containers; place 4 shrimp tempura directly onto the inner mesh rack. Do not stack them; leave enough space so they do not touch each other, and keep the tails away from the heating element. Do not block the mesh openings of the inner rack, and do not place them beyond the MAX line.

    Do not use foil or parchment paper; arrange the 4 pieces in a single layer without overlapping.
    Discuss these instructions
  4. 04

    Reheat for 10 minutes using the timer

    Securely place the basket into the unit, turn the timer dial once to a setting of 10 minutes or more, then turn it back to 10 minutes to start cooking. When 5 minutes have passed according to an external clock, turn the dial back to 0 to stop the timer, pull out the basket, and place it on a trivet. Flip the 4 pieces over and switch their front and back positions. Check the progress according to the guidelines in the “Heating Stages” section. Return only the pieces that go back in to the inner rack, securely place the basket back into the unit, turn the dial once to a setting of 10 minutes or more, then set it to the remaining 5 minutes and resume cooking.

    Discuss these instructions
  5. 05

    Check the center and coating

    Once the set cooking time has elapsed, crack open the 2 thickest pieces of battered shrimp on a clean plate. Serve only if the shrimp is hot all the way through with no cold spots, the surface of the batter is dry, and there are no burnt or hard spots. If the center is still cold, remove the entire batch and proceed to the final check. Do not consider the dish finished based on surface color alone.

    Break open the 2 thickest pieces and check that the shrimp is hot to the center with no cold spots.
    Discuss these instructions
  6. 06

    Serve without a lid

    Transfer the shrimp tempura that meets the readiness criteria to a clean plate. Do not cover with a lid or plastic wrap to prevent the batter from becoming soggy, and eat while still warm. If using tempura dipping sauce, serve it in a separate bowl after reheating the shrimp tempura.

    Discuss these instructions
  7. 07

    What to check if the food is not yet done

    If the food does not meet the completion criteria, stop heating and do not eat it. Do not extend the cooking time beyond the official guideline of 10 minutes. Check the actual cooking time, the quantity and thickness of the food, how long it has been out of the refrigerator, and the condition of the center and the coating.

    Discuss these instructions

Check the results

Break open the 2 thickest of the 4 shrimp tempura pieces, including their coating, on a clean plate. Check that the shrimp is hot all the way to the center with no cold spots, and that the surface of the coating is dry with no burnt or hard areas. Do not eat any piece with a cold center; proceed to the final check.

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If you get stuck along the way

Can I use it on raw shrimp or tempura before frying?

This method cannot be used. It is intended only for 4 pieces of shrimp tempura that have been thoroughly cooked through and then refrigerated after purchase or preparation. Raw shrimp, uncooked batter, and frozen products require different cooking instructions.

Is it okay to line the bottom with aluminum foil or parchment paper?

Do not line the basket with anything in this recipe. Covering the mesh of the inner basket hinders the circulation of hot air, resulting in uneven drying and heating of the batter. Do not place the food in a heat-resistant container; instead, arrange it in a single layer directly on the inner basket.

Will adding more oil make the batter crispier?

Do not add any additional oil. Reheat the food using the residual oil remaining in the batter from the initial frying; do not use a pool of oil or cooking spray. Do not use this method if the food is covered in sauce or water.

Can I heat up the vegetable tempura and kakiage at the same time?

Do not reheat them together. Since the thickness, moisture content, and amount of batter vary, we’ll limit this to 4 shrimp tempura for now. We will not adjust the quantity or time for mixed platters, kakiage, chikuwa tempura, etc.

Can I put it in right after taking it out of the fridge?

Refrigerate the product according to the package instructions, then check the quantity and the condition of the batter before adding it. Do not use products that have passed their expiration date, have been left at room temperature for a long time, or have been frozen.

How the Recipes Were Created and Sources Consulted
Standards verified in official documents
Reheating fried foods (such as tempura, meat cutlets, and spring rolls) takes 10 minutes. Portion sizes are indicated as “—,” and the table does not specify the starting condition (refrigerated or room temperature) or preheating requirements. Notes in the table specify that ingredients should not be stacked and that cooking is done using the ingredients’ own moisture and oil. There are no specific temperature settings. To set a time of 10 minutes or less, first turn the timer dial to a setting of 10 minutes or more, then adjust it to the desired time; to stop the timer midway, return the dial to 0 (p. 7).
Independently designed details and unverified points
This recipe reheats 4 refrigerated, pre-cooked shrimp tempura totaling 120g, 18mm thick or less including the batter, for 10 minutes, the same as the official guide, flipping them after 5 minutes and swapping their front and back positions. Do not heat beyond 10 minutes. The number of pieces, weight, thickness, refrigerated state, the mid-cooking flip and the doneness check by breaking pieces open are the original design of Crisp. and have not been checked on the actual appliance.

RAO-2 User Manual, p. 9, “Cooking Guidelines”: Reheating Fried Dishes ↗

Source checked: 2026-10-25

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