Jul 9, 2016 at 1:46 pm. The key ingredient is the brewer’s yeast. Oatmeal Lactation Cookies Do Lactation Cookies Work Little Scholars I'm having trouble with my milk supply and want to try to make lactation cookies. Do lactation cookies work without brewers yeast . It may be a good idea to avoid lactation cookies, or at least brewer’s yeast until thrush has cleared. The brewer’s yeast, wheat germ, flaxseed meal and whole oats in lactation cookies are what specifically help with a lactating mother’s milk supply. This is to prevent any extra yeast in your system. If you do not have brewers yeast you can substitute 2 tbs more of flaxseed or wheat germ. See the recipe notes below. Vanilla extract dark chocolate chips water; 1/2 cup unsweetened shredded coconut Made with no wheat flour, brewers yeast and way less sugar. I realize that not everyone is likely to have brewer’s yeast in their pantry, therefore i’m including a few options for making these cookies withou...