How can Christmas be without a tree root cake?

Christmas is coming, prepare a Christmas tree root cake in advance, the festive atmosphere is super strong, you should also try it!!

Ingredients

Cakeflour 110 g

Eggs 4 small(3 large)

Sugar 120 g

Milk 80 ml

Cornoil 90 g

Cocoapowder 10 g

Blackchocolate 100 g

Whippingcream 300 g

Butter 20 g

Strawberry 500 g

Blacksesame 5 g

To make ganache: 100g of black chocolate + 100ml of boiled whipping cream + 20g of melted
butter, refrigerate and let stand
Milk 80g + corn oil 90g + sugar 20g + cake flour
1110g + 10g cocoa powder + 4 egg yolks to make a chocolate batter
Squeeze lemon juice into 4 egg whites, add 80g of sugar and beat
in batches
Beat the egg whites and chocolate batter, stir well, put in a baking tray
at 140 degrees for about 20min, and take out
200g whipping cream + 20g caster sugar beat and set aside
Spread the cream on top of the cake and roll up
Cut 1/4 of the position to make a branch
Paint ganache and make a root pattern with a fork
Make Santa Claus with the rest of the cream and strawberries
I put it on top of the root cake and decorate it and am finished