1 1/2 cups all-purpose flour
1/2 cup cornstarch
2 tablespoons baking powder
2 tablespoons bakers' sugar (finely ground granulated sugar)
1 1/2 teaspoons salt
1 teaspoon ground cinnamon
2 yolks
1 1/2 cups club soda
2 bananas
Vegetable oil, for deep-frying
2 cups sugar
1/4 cup water
2 tablespoons unsalted butter
1/2 cup heavy cream
Pinch kosher salt
1 pint vanilla bean ice cream
1/4 cup banana chips
1/4 cup toasted pecans