Maple syrup is a sweet syrup made from the xylem sap of many species of maple, like sugar maples, red maples and black maples. Maple syrup is graded based on its density and translucency. Golden and amber grades of maple syrup have a milder flavor than dark and very dark grades. The darker varieties is used for cooking and baking. br> br>In colder climates, maple trees store starch in their trunks and roots before winter, this starch is then converted to sugar that rises in the sap in later winter and early spring. The trees have taps affixed to their trunks, which helps collect the sap. The sap is heated to evaporate the water, leaving the concentrated syrup.