Add the sugar to a medium-sized saucepan and spread it out evenly. Pour the water and lime juice onto the sugar, but be sure to keep the rest of the lime juice by the side of the pot.

Heat the mixture over medium heat. DO NOT stir the mixture at this stage to prevent crystallization.

As the sugar begins to melt in the next 2-3 minutes, it will start to bubble. Once it's bubbling, reduce the heat to low to avoid burning.

Watch the sides of the pot to ensure the sugar doesn't burn. If you notice any burning, use a damp heat-proof baking brush to brush off the burnt sugar.

Let the mixture simmer for up to 5-10 minutes. This will ensure that the syrup is thick enough to create the "tiger stripes" effect. If you prefer a thinner syrup, you can simmer for a shorter amount of time. But avoid simmering for more than 5-10 minutes, as the syrup will become too thick to use.

Turn off the heat and allow the syrup to cool. Once it's cooled, store it in an airtight container. The syrup can be stored in the fridge for 2-3 weeks in a sterile, air-tight container. When you take it out to use again, The syrup should be thick, similar to molasses.