The recipe for rainbow cake is as follows: 1. Main ingredients: 85g low-gluten flour, 5 eggs, 50g water, 70g caster sugar, 70g salad oil, 50g salt, 1g appropriate amount of pigment. 2. Accessories: 500g light cream, 500g caster sugar, 50g rainbow cake recipe.

Steps: 1. Separate the egg yolk and protein and start the oven to preheat.

2. Put egg yolks, 20 grams of caster sugar, oil, water and salt into the same deep dish and beat until combined.

3. Sift in the low-gluten flour and mix until there are no particles.

4. Divide the egg yolk batter into 5 equal portions, each portion is about 60 grams of batter, add a little coloring to each portion, and mix well.

5. Add 50 grams of fine sugar to the egg whites in three batches and beat until wet to dry foam.

6. Divide the egg whites equally into 5 bowls of batter. Each portion is about 40 grams of egg whites. Cut and mix into smooth colored cake batter.

7. Brush the bottom of the mold with a layer of baking oil, then pour in the cake batter and shake to create large bubbles.

8. Place in the middle rack of the oven, heat up and down to 175 degrees for 15 minutes, then turn the heat to 200 degrees and bake for 5 minutes to brown.

After taking it out of the oven, turn it upside down to cool, then unmold.

9. Add 50g of fine sugar to 500g of whipped cream and beat until stiff peaks form.

Then layer the cake body with a layer of whipped cream and cover it.

The color of the cake body is red, orange, yellow, green and blue from top to bottom.

10. Spread whipped cream all over the cake.

11. Divide the remaining whipped cream into 6 parts, leaving more of the white part. Add coloring to the remaining 5 parts and put them into a piping bag.

12. Cut a small hole in each piping bag, then pipe out string to form a rainbow.

13. Cut the hole of the piping bag larger, pipe small rainbow dots on the cake foot to decorate and draw clouds with white.

14. Finally, use chocolate to draw the wild goose and put colored sugar on it for decoration.

15. Cut the cake, and there is another bright rainbow inside.