DURHAM. N.C. - That cup of coffee just not getting it done anymore? How about a Buzz Donut or a Buzzed Bagel? That's what Doctor Robert Bohannon, a Durham, North Carolina, molecular scientist, has come up with. Bohannon says he's developed a way to add caffeine to baked goods, without the bitter taste of caffeine. Each piece of pastry is the equivalent of about two cups of coffee.