The Food Lover's Companion by S.T. Herbst
Thin: 3 parts water to 1 part sugar.
Medium: 2 parts water to 1 part sugar.
Heavy: equal parts water and sugar.
Sugar syrup (aka. simple syrup, gomme syrup, and sirop de gomme) is a solution of sugar and water that is cooked over low heat until clear, then boiled for a minute or so. It can be made in various densities: