Do not boil simple syrup for more than the time it takes to dissolve. It you overcook your syrup it will eventually become caramel. We are aiming for caramel simple syrup, not caramel.Taste the syrup once cooled and add more salt if you like. I recommend using sea salt for this recipe. It elevates it. Plus flaky sea salt is great for topping baked goods and many other uses. It’s worth it!