St. Patrick's Day Cake Balls

I made those cute cake balls for our St. Patrick's Day lunch, which we have every year in our company. 

Ingredients (make about 25-30 cake balls):
4 eggs,
1/2 cup cake flour,
1/2 cup starch,
4 tbsp vegetable oil,
1 cup sugar,
pinch of salt,
1 tbsp liquid green food coloring,
1 tsp coconut essence (or vanilla essence),
1 tsp baking powder.

Cream filling:
200 ml double cream,
4 tbsp condensed milk (or 4 tbsp sugar).

about 400 gr. white chocolate.

Cake:
Preheat oven to 180C. Lay a baking sheet with a parchment paper.

Whip egg whites with a pinch of salt to soft peaks. Separately, beat egg yolks with sugar until white, then add vegetable oil, food coloring and coconut essence, stir until smooth.

Mix starch, flour and baking powder and add to the yolks and stir well. Then add beaten egg whites and stir carefully.

Spread the mixture on the baking sheet and bake for 15-20 minutes. Cool the cake for 10 minutes, then cool completely on the rack. Discard browned crust from the cake surface.

Cut the cake on pieces, then put them in food processor and make crumbles.

For assemble: 
Whip the cream with 4 tbsp of condensed milk  until soft peaks and mix thoroughly with cake crumbles.

Roll mixture into quarter size balls and lay on cookie sheet. (Should make 25-30)

Chill for several hours. (You can speed this up by putting in the freezer.)

Melt chocolate in microwave or on stove per directions on package.

Put each ball on a stick, then roll balls in chocolate.(I made double chocolate covering).