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How to Make Konjac Cake

Konjac cake is a low-calorie dessert. The cake itself is gluten-free and uses zero-calorie sweeteners instead of white sugar, making it ideal for those on a fat-loss diet. Including baking time, it generally takes about 0.5 hours to complete.

Estimated Cooking Difficulty: ★★★★

Essential Ingredients and Tools

Tools

  • Oven
  • Electric hand mixer
  • Metal cake pan (any shape)
  • Baking paper
  • Spatula (for folding and smoothing the batter)
  • Heat-resistant gloves
  • [Optional] Egg separator

Ingredients

  • Eggs
  • Erythritol
  • Cocoa powder
  • Konjac flour
  • Cream of tartar

Measurements

Per serving (9.25 × 5 × 1 inches):

  • 3 eggs
  • 50g Erythritol
  • 10g Cocoa powder
  • 10g Konjac flour
  • 1g Cream of tartar

Instructions

Preheat the Oven

  • Start preheating the oven to 350 ℉ (150 ℃) before preparing the batter to save time.

Initial Separation Steps

  • Take fresh eggs out of the refrigerator.
  • Prepare two clean, dry containers to hold the egg whites and yolks separately.
  • The container for egg whites can have slight moisture but must be completely free of oil; the container for egg yolks must not have any water droplets.
  • Crack the eggs and separate the whites from the yolks into the two containers using your hands or an egg separator.
  • Ensure the yolks do not break, and no yolk should mix into the egg whites, as this will severely hinder whipping. (Small white chalazae strands are fine to enter the whites and do not affect the process.)
  • (Note: If not using a stand mixer, the container holding the egg whites will also be used for whipping. To prevent overflow, ensure the volume does not exceed 1/8 of the container's capacity after adding all the egg whites.)

Whipping the Egg Whites

  • Add 1g of cream of tartar to the egg whites.
  • Whip on high speed until the mixture reaches a coarse bubbly state, then add 50g of erythritol.
  • Reduce the mixer to medium-low speed and whip until the egg whites reach a stiff peak state (when the mixer head is lifted, short, upright peaks form; when the container is inverted, the whites should stick to the container and not fall out).
  • At this point, the egg whites are whipped to the required consistency.
  • Keep the mixer head close to the bottom of the container to prevent a situation where the top layer is whipped but the bottom remains liquid.

Mixing Other Ingredients

  • Add the separated egg yolks to the whipped egg whites and mix evenly with an electric mixer at low to medium speed.
  • Add 10g cocoa powder and 10g konjac flour to the egg whites. First, fold them in gently with a spatula because using an electric mixer directly may cause the powder to splash.
  • The folding technique is as follows:
  • Hold the spatula with your right hand and insert it from the center of the mixing bowl to the bottom of the batter.
  • Scrape towards the 8 o'clock direction until you hit the side of the bowl. Gently lift the batter into the air, then move it back to the center of the bowl to release it.
  • Hold the mixing bowl with your left hand and rotate it from the 9 o'clock position to the 7 o'clock position. This completes one cycle with a rotation of 60 degrees.
  • The speed should be approximately 2 strokes per second.
  • This method is from Kojima Sensei's Cake Class. In layman's terms, it is like stir-frying vegetables.
  • After folding, mix evenly with an electric mixer at low speed.

Baking

  • Line the mold with parchment paper, ensuring it fits snugly against the bottom and inner walls.
  • Pour the cake batter into the mold, smooth the top with a spatula, and then tap the mold a few times to remove large air bubbles.
  • Bake for 25 minutes.
  • Once baked, remove the mold using heat-resistant gloves.

Cooling and Unmolding

  • (Optional) Drop the mold from a height to release trapped steam.
  • Invert the mold for 10 minutes to allow the cake to cool.
  • Unmolding the cake immediately before it has cooled may damage it.
  • This step may be hot, so be sure to wear heat-resistant gloves.
  • Unmold the cake, slice it with a spatula, and serve.

Additional Information

If you encounter any issues or have suggestions for improvement while following this guide, please submit an Issue or Pull request.