Keto Japanese cake

Here’s a concise recipe for a keto Japanese cake:

Ingredients:

• 6 large eggs, separated
• 1/2 cup almond flour
• 1/4 cup coconut flour
• 1/4 cup unsweetened almond milk or coconut milk
• 1/4 cup powdered erythritol or another keto-friendly sweetener
• 1 teaspoon vanilla extract
• 1/2 teaspoon cream of tartar
• Pinch of salt