Prep a 9x5 loaf pan either with parchment or greasing or both. Preheat oven to 350°F.
Whisk together your dry ingredients: Flour, salt, baking powder, baking soda and poppy seeds in a medium-large bowl.
In a smaller bowl, whisk together softened butter with sugar. After well mixed, add in yogurt and oil.
Add eggs, one at a time, mixing in fully before adding next. Add in orange extract and mix in.
Add your wet ingredients into the dry and mix until just combined.
Depending on the size of your blackberries, if they are larger cut them in half or thirds. Reserve 1 pint of berries for glaze.
Add blackberries into batter, gently folding in. Do not overmix.
Pour batter into prepped pan, place on center rack of oven and bake for about 55 minutes. Toothpick inserted into center will come out cleanly.
Let loaf cool in pan for about 20 minutes before turning out onto a wire rack to cool.
Add remaining blackberries to a sauce pan with sugar and lemon juice. Cook on low for 5-10 minutes until berries become soft and release juice. Use a fork or potato masher and create a jammy mixture.
Remove from heat and pour fruit mixture through strainer.
Sift powdered sugar into a small bowl. Add a pinch of salt, 1 tbsp milk and whisk in. Add blackberry reduction 1-2 tbsp at a time until a thick glaze forms. Glaze will seem almost too thick but when you lift the whisk it will ribbon off slowly.
Pour over the top of your loaf after your loaf has cooled for about 1 hour. You may need to use a utensil to help glaze to edges. I topped mine with some additional blackberries, however this is optional. Enjoy!
