Put flour, ginger, yeast in a bowl and combine well. (See the notes below for an alternative method of proofing the yeast first, if you prefer doing that)
Add the butter cubes and combine them until they're smaller chunks. Don't worry about them being chunky.
Heat the water to 110-115 degrees F – do not heat the water above 115 or you will kill the yeast. If you overheat it, let it cool to the right temperature before adding it to the flour mixture.
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.I have been using these plastic proofing bags for about a year now and love them. I get a better rise using them. Allow bread to rise in a warm area for 25 minutes or until it is 60% its original size.Remember, Einkorn bread should not double in size. 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, a moist towel, or the proofing bag I use, and let the bread rise for another 25 minutes or until it is 60% risen. If it 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 its side on a cooling rack and allow it to sit for 10 minutes before removing the loaf from the pan.
Turn the bread out on the cooling rack and let it sit until completely cool before slicing. This will take about an hour.Slicing your bread before it’s completely cool will cause it to have a more crumbly texture. I’m told this is due to moisture escaping from the loaf in the steam.