Continue to stir until the mixture is making large bubbles, is very thick, and is a golden caramel color. It's very important to stir constantly at this point to prevent burning.
Tip: If the mixture starts to stick to the bottom and burn, you can quickly pour it into a clean pot. If there are burnt pieces visible in the mixture, strain it through a fine mesh sieve as you pour it into the new pot. Lower the heat a little and continue cooking and stirring.
