Buttery Buckwheat Cake, How I Miss Thee - Turntable Kitchen

Ingredients

• 7/8 cup of buckwheat flour
• 1 cup of white whole wheat flour
• 1/2 teaspoon of sea salt, plus additional 1/3 teaspoon for sprinkling
• 1/4 teaspoon of ground cinnamon
• 1/2 pound of unsalted butter, at room temperature
• 1 cup of sugar
• 5 egg yolks + 1 egg
• 3/4 teaspoon of vanilla extract
• 2 tablespoons of dark rum
• 1 teaspoon of milk