Lisi's Grapefruit Cake - Walter Stewart's Market

Ingredients

• 1 cup sugar
• 2 teaspoons finely grated grapefruit zest
• 2 grapefruits
• 2 sticks unsalted butter, softened to room temp
• 2 eggs, room temp
• 2 teaspoons grapefruit juice
• 1 1/3 all purpose flour
• 1/4 teaspoon baking soda
• 1/2 teaspoon kosher salt
• 1/2 cup buttermilk well shaken
• 1/3 cup sugar
• 1/3 cup freshly squeezed grapefruit juice
• 1 tablespoon freshly squeezed grapefruit juice
• 1/2 cup confectioners’ sugar
• pinch of salt