Simple syrup, also known as sugar syrup, can be made into a variety of thicknesses for a variety of different uses. Cooled thin syrup (3 parts water to 1 part sugar) is useful for brushing onto cakes to add a bit of extra sweetness and moisture. Medium-thick syrup (2:1) is great for adding sweetness to teas and coffees, and thick simple syrup (1:1) is excellent for candying fruits and veggies.