Place a Silpat® on a cookie sheet; set aside.

In a heavy 2-quart saucepan placed over medium-high heat, add the sugar, water, and Karo® syrup; cook until sugar dissolves without stirring.

Cook the sugar mixture until it reaches 300º.

Remove from heat; add the blue food color and swirl. It's okay to have a variation in blue color.

Pour the sugar mixture on the Silpat® forming irregular pond shapes.

Be careful: the sugar mixture is very HOT!

Set aside; cool.