Do Japanese sweet potatoes need to be wrapped in foil?

No. This recipe uses foil because it traps moisture and gives the potatoes a softer, creamier texture. Baking them without foil produces a slightly drier, fluffier interior and a crisper skin.

Yes. The skin is edible and becomes soft when the potatoes are wrapped in foil. Scrub the potatoes thoroughly before baking to remove any dirt.

Can I cook Japanese sweet potatoes in the microwave?

You can, but the flavor and texture will be different. A microwave heats the center quickly, so the potato has less time to develop the sweetness and texture associated with slowly baked yaki imo. The oven method is better when flavor is the priority.

Baked Japanese Sweet Potato (Yaki Imo Recipe)

Name: Japanese Sweet Potato (Yaki Imo)
Prep time: 5 min
Cook time: 1 h 10 min
Total time: 1 h 15 min
Cuisine: Japanese
Ingredients: 4 Japanese sweet potatoes; Aluminium foil, for wrapping

Japanese Sweet Potato (Yaki Imo)

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Japanese sweet potatoes baked until the reddish-purple skins are soft and the golden centers are naturally sweet, moist, and creamy.

Author: Caroline Phelps
Prep Time: 5 minutes
Cook Time: 1 hour 10 minutes
Total Time: 1 hour 15 minutes
Yield: 4 sweet potatoes 1x
Category: Side
Method: Baking
Cuisine: Japanese
Diet: Vegan

Ingredients

Scale

4 Japanese sweet potatoes
Aluminium foil, for wrapping

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Instructions

Preheat the oven. Preheat the oven to 350ºF (180ºCº).
Clean the potatoes. Scrub the sweet potatoes under cold water to remove any dirt. Pat them dry.
Pierce and wrap. Poke three or four holes in each potato and wrap each one in aluminum foil.
Bake until tender. Place the potatoes on a baking sheet and bake for 1 hour and 10 minutes. Insert a skewer or thin knife into the thickest part. If it does not slide through easily, continue baking in 10-minute increments.
Rest and serve. Carefully open the foil and let the potatoes rest for 5 minutes before serving.

Notes

The cooking time depends on the thickness of the potatoes. Very thick potatoes may take 80 to 90 minutes.
Refrigerate cooled potatoes without the original foil in an airtight container for 3 to 4 days.
Freeze individually wrapped potatoes for up to 3 months.

Nutrition

Serving Size: 1 sweet potato
Calories: 112
Sugar: 5g
Sodium: 72mg
Fat: 0.1g
Saturated Fat: 0g
Unsaturated Fat: 0g
Trans Fat: 0g
Carbohydrates: 26g
Fiber: 3.9g
Protein: 2g
Cholesterol: 0mg

Find it online: https://pickledplum.com/japanese-sweet-potato/