Agave nectar has a very low GI, primarily because almost all of the sugar in it is fructose. It has very little glucose, at least when compared to regular sugar. A recent study in mice compared the metabolic effects of Agave nectar and sucrose (plain sugar) after 34 days.
To make a flavoured syrup, start with the same bases of sugar and water (either 1:1 or 2:1 ratio) then add a flavouring element while the sugar and water are warming. When the syrup is flavoured enough for your taste, remove from heat and strain into the bottle.
Step 1, In a small saucepan, combine the honey, water, lemon juice and lemon zest. Cook over medium heat stirring occasionally until boiling. Continue to boil until the mixture is reduced by a fourth. Pour warm syrup over cake and allow to sit for a few minutes before serving.
Rich Simple Syrup. Rich simple syrup simply means that you're using more sugar than water to create a richer syrup. It is a 2:1 ratio and you can often use a little less syrup than a drink recipe calls for. You can also make this simple syrup with equal parts (1:1) of sugar and water. It will be a little thinner and it will add just a touch of sweetness to your drinks.