Step 1

In a heavy duty saucepan over medium heat, combine the sweeteners and water. Bring to a boil, whisking to dissolve the sweeteners. Reduce the heat to medium low and simmer 5 minutes. Watch carefully to make sure it doesn't burn.

Step 2

Add the butter and whisk to melt. Return to a simmer and cook until the mixture begins to thicken and darken in color.

Step 3

Remove from heat and whisk in the maple extract and salt, if using.

Step 4

Let cool to room temperature and transfer to a glass jar for storing.