Delicious Chocolate Currant Cake to Go

Ingredients

• 1 large egg
• 100 grams (1/2 cup) granulated sugar
• 50 grams (1/4 cup) unsalted butter
• 100 grams (1/2 cup) kefir
• 80 grams (2/3 cup) all-purpose flour
• 30 grams (1/4 cup) cocoa powder
• 4 grams (1 teaspoon) baking soda
• 1 gram (1/4 teaspoon) salt
• 40 grams (3 tablespoons) blackcurrant puree
• 70 grams (1/2 cup) white chocolate
• 50 grams (1/4 cup) heavy cream