In some einkorn recipes, you will notice a little difference but in this recipe, my family had no idea. If anything the flavor will be just a little richer, a little but of a nutty flavor. Just remember when you're cooking with all-purpose Einkorn flour, you will need to reduce the liquid by about 25% or add additional flour.  The Einkorn flour doesn't absorb moisture quite like regular flour. Einkorn has just a little bit of a yellow tint to it but, in most cases, responds the same as regular all-purpose flour.