Step 1

Line two six-inch pans with parchment paper. Spray them with nonstick oil. Make sure that the sides are also coated with oil. Set aside until ready to use.

Step 2

Place the egg yolks and sugar in a large bowl and mix until pale in color. Add the oil and vanilla. Mix using an electric mixer or wire whisk. Mix until the mixture turns pale in color. Add the water.

Step 3

Sift the flour, salt, and baking powder and add to the egg mixture. Mix until there are no lumps present.

Step 4

Place the egg whites into the electric stand bowl. Mix until frothy and add the cream of tartar or vinegar.

Step 5

Mix for one more minute and add the sugar in three additions. Mix on high until stiff. Remove the bowl and set aside until ready to use

Step 6

Add the prepared egg whites to the egg yolk mixture. Add the egg whites in three intervals. Fold the egg whites into the egg mixture until there are no white strips present.

Step 7

Pour the mixture equally into the prepared pan and tap on a flat surface to remove bubbles. Cover the pan with tin foil and make a small slit in it.

Step 8

Place the inner pot into the instant base. Put the trivet in and put the pan on top. Please see the photo above.

Step 9

Place the dehydrating tray on top of the first pan and put the second pan on top of it.

Step 10

Cover with the air fryer lid and push the bake setting button. Set the temperature to 350 F. Set the Instant pot timer to forty minutes.

Step 11

Now, set your phone timer to ten minutes. When ten minutes is up, check the cake. Open the air fryer lid and check the top pan and see if the sponge cake is cooked. If it springs back when tapped, or when the toothpick comes out clean, it’s done. Cancel your phone timer.Remove the top pan from the Instant Pot and let it cool for five minutes and remove the parchment paper. Let it cool completely on the cooling rack.let the second pan cook.

Step 12

Now set your phone timer again for ten minutes. Let the second cake continue to cook by putting the air fryer lid back. Check the cake again when the ten minutes are up. If it’s still raw, put the lid back on the Instant Pot. Check every five minutes until the cake is completely baked.

Step 13

When the second cake is done, remove it from the Instant pot and let the cake cool for five minutes, and then cool completely on the cooling rack.

Step 14

Follow all the steps except preheat your oven to 350 F and set the oven rack in the middle of the oven. When ready put the pan and bake for ten to fifteen minutes. Start checking the cake by toothpick test at eight minutes. please see the notes for the decorated Yema cake