An acquaintance of mine has been trying to convince me to start buying fresh coffee beans, roast, grind, and brew them myself. His rationale is you get a richer cup of coffee, it’s cheaper, and healthier for you. When I asked him why it’s healthier? He told me many gourmet coffee growers use formaldehyde to keep the beans fresh? Is this true? Also if I start buying raw beans (I guess that’s what they would be called) can I roast them, grind them, and brew them right away? Would I have to let the roasted coffee beans sit for a while before grinding and brewing them?