Agave syrup, aka maguey syrup, and commonly though inaccurately known as agave nectar, is a sweetener commercially produced from several species of agave, including Agave tequilana and Agave salmiana. Blue-agave syrup contains 56% fructose as a sugar providing sweetening properties.
Combine the water and agave nectar in a saucepan and bring to a boil.
Reduce to a simmer and stir until nectar dissolves, about 2 minutes. Immediately take the saucepan off the heat.
Let cool, then pour into a container and store in the refrigerator for up to one month.