Preheat the oven to 350°F.
Grease one 8×4 inch loaf pan. Line with parchment paper and set aside.
In a large bowl, whisk together flour, salt, baking powder, baking soda, cinnamon, cloves, and nutmeg. 
In a stand mixer, whisk together the butter and sugar.
Add egg, egg yolk, kefir, and vanilla and mix until combined.
Fold dry ingredients into wet ingredients along with the shredded carrots, shredded zucchini, apples, and pecans.
Pour into prepared pan.
Bake until golden brown, 55 to 60 minutes, or until a cake tester comes out clean.