Vanilla Sponge Cake with Fresh Strawberry Jam

Ingredients
For the Strawberry Jam Filling:

200 g strawberries (fresh or frozen, chopped)

50 g sugar

50 ml water

1 tbsp cornstarch + 30 ml water (for slurry)

For the Vanilla Sponge Cake:

5 eggs (room temperature)

1/3 tsp salt

10 g vanilla sugar (or 1 tsp vanilla extract)

140 g sugar

How to Make
Step 1: Make the Strawberry Jam