Caramelized honey is a treat beloved of Chowhounds, but it's extremely hard to find. Once in a while, hounds run across it at local farmers' markets, but daddio explains how to make it at home. In addition to the honey, you need either ammonium carbonate, which is sold as a leavening in Middle Eastern markets, or diammonium phosphate yeast nutrient. Heat a pound of honey in a heavy saucepan with nine grams of the ammonium carbonate until it boils and starts to darken. Taste a drop or two every now and then (drip it onto aluminum foil to cool first), and stop when it's as dark as you want it. Then slowly add water to mix it back to the original consistency.