Make the balsamic glaze: Add the vinegar to a saucepan. Turn the pan to medium-high heat and bring the vinegar to a boil, stirring to make sure it doesn’t stick to the pan. Then turn the heat down to a simmer. Stir occasionally and cook until the balsamic is reduced by one-third.
Thread a skewer starting with a red tomato. Next, fold a basil leaf in half and then thread it on the skewer. Add one piece of string cheese and another folded basil leaf. Finish off the skewer with an orange tomato. Assemble based on the length of your skewer and how many you are serving.
Remove the balsamic glaze from the heat and allow it to cool.
Place the assembled skewers on a serving plate or tray.
Then drizzle the skewers with the balsamic glaze, salt and olive oil.
Note: If you don’t have skewers on hand, you can also thread one basil leaf, one tomato and one piece of string cheese onto wooden toothpicks.