Preheat oven to 375 F.
Measure all the dry ingredients – flour, salt, baking soda and sugar in one bowl. Mix well. If using a stand mixer, use the beater attachment to mix or whisk in a mixing bowl.
Add oil to the dry ingredients and mix again.
Next, measure buttermilk. Beat in one egg and orange zest with the buttermilk.
The final assembly is tricky- combine the wet and dry ingredients, mixing until you get a wet and sticky dough.
Add a tablespoon of flour to a cup of raisins and then combine with the dough.
Transfer the dough to a well floured surface and gently knead it until you are able to shape it into a round, boule like shape. Cut a shallow X on the top.
Prepare a baking sheet with parchment paper. And if you are out of parchment paper, oil the baking sheet (I used my cast iron baking plate) and spread a thin layer of flour. This trick will always come handy while baking.
Transfer the boule to the prepared sheet and bake for 45-50 minutes at 375 F.
The loaf will rise as it bakes. Test using a cake tester/toothpick/knife in the center to check for doneness.
Cool the loaf a little before slicing. Enjoy with butter, cheese, honey, jam, or anything else you enjoy.