Blueberry Jam Cake

Overview

My son liked it so much that he ate 3 of them right after they were baked

Pour eggs, light cream, rum, and melted liquid butter into a large bowl, then add fine sugar and salt and stir evenly.
Sift together low-gluten flour and baking powder.
Pour the sifted flour into the mixture in the first step, and use a rubber spatula to stir into a moist batter
Add blueberry jam
Mix well with a rubber spatula. It doesn't need to be mixed very evenly.
Pour the batter into the mold, filling it 2/3 full.
Place in a preheated 180-degree oven and bake for about 15 minutes, until fully puffed and the surface is golden brown.
8.Look at the internal organization