Good Irish soda bread recipes from Food Network and Betty Crocker call for flour sugar, baking soda, salt and butter. Food Network's recipe uses orange zest and dried currants for additional flavor while Betty Crocker's recipe includes similar ingredients but substitutes raisins for the orange zest and currants.
The Food Network recipe includes 4 cups of flour, 4 tablespoons of sugar, 1 teaspoon of baking soda and 1 1/2 teaspoons of kosher salt for the dry ingredients. The wet ingredients include 4 tablespoons of cold unsalted butter, 1 3/4 cups of buttermilk and 1 lightly beaten extra-large egg. Add orange zest and dried currants; lightly flour the dried currants before adding them.
Preheat an oven to 375 degrees Fahrenheit. Line a sheet pan with parchment paper. Combine the dry ingredients and the butter in an electric mixer. Slowly add the wet ingredients with the mixer on a low speed. Put the dough onto a floured board and knead the dough to make a round loaf.
Place the loaf on the sheet pan. Cut an X about 2 inches deep into the top of the loaf. Bake the loaf for approximately 35 to 55 minutes. Use a cake tester to ensure the bread is thoroughly cooked.