2 purple sweet potatoes

1 yam

4 eggs

Low powder 90g

70 grams of powdered sugar

50 grams of corn oil

65g milk

Coconut paste 10g (for decoration)

2 tablespoons condensed milk (for sandwiches)

A moderate amount of milk (for sandwiches)

How to make purple potato and yam sandwich cake?

Step 1:

The albumen and yolk of four eggs are separated.

Step two:

Pour milk and corn oil into a cooking basin and stir evenly to emulsify it. The liquid will thicken after emulsification, like yogurt.

Step 3:

Sift in the low-gluten flour. Hand pump and stirring can be carried out alternately with "Z" or "N". Stir until there is no dry powder.

One step? four

Add the egg yolk and continue to stir in the previous step.

Step five:

Stir into high-quality batter.

Step 6:

Drop a few drops of lemon juice into egg white, and add 1/3 powdered sugar to electric egg beater until fisheye bubbles appear.

(At this time, you can preheat the oven before sending out the egg whites, up and down 175 degrees. Time depends on your own oven. Mine is intelligent preheating. )

Step 7:

When the foam is fine, add 1/3 powdered sugar.

Step 8:

When lines appear, add the remaining 1/3 powdered sugar.

Step 9:

Keep playing until you can pull out a strong little corner.

Step 10:

Add 1/3 protein cream into the egg yolk paste and stir well.

Step 1 1:

Pour the upper egg yolk paste into the remaining egg white cream and continue to stir evenly. Stir with the word' J', and the evenly stirred batter will be fine and shiny.

Step 12:

The baking tray can be paved with glass fiber cloth, oiled paper and silicone pad in advance. Pour the egg paste into the baking tray, the middle layer of the oven 175 degrees, about 20 minutes.

Shake the baking tray vigorously before entering the oven, shake out excess bubbles and scrape the surface with a scraper.

Step 13:

Wash purple potato and yam, peel, slice, cut into sections, and steam in a pot.

Step 14:

Steamed, slightly cooled, mixed together and put into the cooking machine.

One step? 15:

Add condensed milk and milk (I can't give the exact amount according to the water absorption of yam and purple potato)

Step 16:

Mud, no sugar.

Step 17:

The baked cake is divided into four parts on average, and only three cakes are used here. Spread a layer of purple potato and yam mud on three cakes and sprinkle a layer of coconut milk.

srep 18:

Cut a little around to make the cake more tidy.