Cake named "Yummy"

My wife's new culinary masterpiece. A cake named "Yummy".We ate this cake for my mother-in-law's birthday. It was delicious! There is a recipe.

4 eggs
135 g sugar
100 g hazelnuts (chopped, you can use any other nuts)
1 tsp baking powder
2 tsp instant coffee diluted in 3 tbsp boiling water
a pinch of salt, vanillin (vanilla sugar or vanilla extract)
Bake at 170° 35-40 min.

For cream:
500 ml milk
75 g semolina
130 g sugar
250 g butter (room temperature, soft)
100-150 g condensed milk
2 tsp instant coffee diluted in 3 tbsp boiling water

For syrup:
75 ml coffee with milk and sugar to taste