Recipe by: 9HoneyServes: 4Time: <15 mins Ingredients 4x 170g beef burger patties 1 medium red beetroot (about 200g), peeled 1 1/2 tablespoon balsamic vinegar 1 tablespoon extra-virgin olive oil, plus more for brushing 1 tablespoon thinly sliced fresh chives 1 tablespoon finely chopped fresh dill 1/2 teaspoon sugar 1/3 cup mayonnaise 3 teaspoons Sriracha 4