In a large bowl, combine the flour, baking powder, baking soda, and salt.
Add the shredded cold butter. Use a pastry cutter or your fingers to incorporate the butter into the flour mixture until it resembles coarse crumbs.
In a separate bowl, mix the milk, honey, and sourdough discard. Gradually add the wet ingredients to the dry ingredients, mixing until a dough forms.
Knead the dough on a lightly floured surface for about 5 minutes until smooth. Set the dough in a bowl, cover with plastic wrap and allow to bulk ferment for 4 hours at room temperature. For long term fermenting benefits let sit in the fridge overnight or refrigerate for at least 30 minutes to keep it cold before rolling out.
Prepare the Filling
In a small bowl, mix the melted butter, minced garlic, thyme, and basil. Roll out the dough into a rectangle on a floured surface.
Spread a thin layer of tomato paste on top. Be careful not to overdo it—a little goes a long way. Too much tomato paste can make the dough too wet and affect the baking process. Brush the melted butter mixture over the tomato paste.
Shape the Wreath
Roll the dough tightly into a log. Cut the log in half lengthwise, exposing the layers, leaving one inch connected at the top.
Twist the two halves together, keeping the cut sides facing up. Shape the twisted dough into a circle to form a wreath. Place the wreath on a parchment-lined cast iron skillet or baking sheet.
Bake
Brush the top of the wreath with any remaining melted butter mixture.
Bake for 30-40 minutes or until golden brown and cooked through. It should be 200 °F to 210 °F when using an instant read thermometer
Cool and Enjoy
Allow the wreath to cool slightly before serving. It pairs beautifully with soups, stews, or even as a festive appetizer.