Although familial Alzheimer's disease is responsible for a small minority of cases of Alzheimer's disease, it is important, not only for the families with it, but also for what we can learn about all of Alzheimer's disease from it.
Simple syrup. A basic sugar-and-water syrup used by bartenders as a sweetener to make cocktails. Simple syrup is made by stirring granulated sugar into hot water in a saucepan until the sugar is dissolved and then cooling the solution. Generally, the ratio of sugar to water can range anywhere from 1:1 to 2:1 by weight, and similarly by volume due to air in the granulated sugar.
To make a simple syrup, combine 1 cup water and 1 cup white sugar. Bring to a boil, then lower the heat and simmer until it has reduced by half, which should take about 5 minutes. Now if you want flavoring, you have to add those ingredient(s) at the same time you add the water and sugar.