Preheat the oven to 350°F, grease two 8-inch round pans, line with parchment, and flour the sides well.
Beat the butter and sugar for about 5 minutes until pale and fluffy, scraping the bowl as needed.
Add the eggs one at a time, then mix in the cocoa and vinegar paste until smooth.
Sift the flour, salt, and baking soda, then alternate adding the dry ingredients and buttermilk, finishing with vanilla and red food coloring.
Divide the batter evenly, smooth the tops, and bake for 25 to 28 minutes until set, then cool completely.
Slice half of the strawberries for the filling and leave the rest whole, drying them well.
Whip the cold cream with powdered sugar and cornstarch until stiff peaks form.
Heat the cream, pour it over the chocolate, and stir until smooth, then cool until pourable.
Layer the cake with whipped cream and strawberries, top with the second layer, and finish with cream, whole berries, and ganache.