Put flour, ginger, yeast in a bowl and combine well.
Add the butter cubes and combine them until they're smaller chunks. Don't worry about them being chunky.
Add the ACV and salt to the warm water.
If you have an electric mixer with a bread hook, use that. If you don’t have a mixer, you can knead the dough by hand.Turn the mixer to low and slowly add the warm water mixture to the flour while mixing on low for 10 minutes. After 10 minutes of mixing, turn off the mixer and scrape down the sides of the bowl.
Next, place the dough in a greased bowl and turn to coat all sides. Cover with plastic wrap or a damp towel.
Allow bread to rise in a warm area for 25 minutes. Overproofing Einkorn dough will cause it to collapse when baked so be careful not to overprove. Butter or oil a bread pan.
Shape the dough to the form of your bread pan then place it seam-side down into the pan.I prefer to work bread with hands moistened with water, but you can oil or butter your hands instead. Cover the pan with plastic wrap or a moist towel and let the bread rise for another 25 minutes. If the bread rises to touch the cover, remove it and let it continue to rise uncovered.
Bake in a preheated 375-degree F oven for 45-50 minutes or until golden brown.
Place the pan on a cooling rack and allow it to sit for 10 minutes.
Turn the bread out on the cooling rack and let it sit until completely cool before slicing. This will take about an hour.