Soaking grains in a soured or cultured milk, buttermilk, or cream breaks down the phytic acid in the bran of the grains that is so harsh on our intestinal systems. Our bodies are better able to absorb the many nutrients of the whole grain wheat. This is the first recipe I tried using that method. As Sally Fallon states, it does produce a softer waffle. I was very pleased with the results and my family liked them very much. I will be making them often. I use whole wheat flour (fresh ground from my grain mill) but you can use spelt or kamut. I also use buttermilk but you can use kefir or yoghurt.