Whether you shop for ingredients at a conventional market or natural foods store, make sure the product is certified USDA Organic or Fair Trade (for the cocoa, coffee and chocolate chips), and bears these third-party seals rather than making unverifiable claims. Here are some product brands that we used, which can be found at Whole Foods or regional green supermarkets such as Mrs. Green's.
• Equal Exchange organic and fair trade certified baking cocoa.
• Florida Crystals organic cane powdered and granulated sugar. Their granulated sugar is slightly finer and less refined than traditional sugar, but it is a cup-for-cup replacement for white granulated sugar. It's certified kosher, too!
• King Arthur or Arrowhead Mills unbleached, all-purpose, organic white flour (also available at Stop & Shop). Do not use whole wheat or spelt flour for this recipe! Organic Powdered Sugar — Florida Crystals brand, 16 oz. for $3.19 at Mrs. Green's — ultra fine 10X confectioner's sugar made from organic sugarcane. Non-GMO and also certified kosher!
• Eggs that are organic and/or certified humane, from happier, healthier hens (both kinds of eggs are widely available in conventional as well as natural foods stores).