In a small saucepan, heat sugar on medium-low heat until the crystals start to dissolve. This will take some time, about 15-20 minutes so be patient. Stir or shake the pan to prevent burning.
Once it's all dissolved and golden brown, add the water. It'll sputter so be careful!
Stir the water and sugar together and continue to heat until the sugar is all dissolved.
Remove from heat. Store remaining syrup in the fridge in an airtight container for 2 weeks.
To Make Vanilla Syrup
Heat the sugar and water in a small saucepan on the stove over medium heat. Bring to a boil once the sugar is dissolved.
Boil for about 5 minutes. Then remove from heat and add vanilla extract.
Store remaining syrup in the fridge for up to 2 weeks in an airtight container.
Iced Latte Assembly
Start by dissolving the instant coffee or espresso powder in water. Make sure all crystals are dissolved. If you have an espresso maker, you can substitute this instead - make 2 shots.
In a glass, add 1.5 tbsp of the syrup and milk. Then add ice.