Heat the olive oil in a skillet over a low/medium heat. Thinly slice the garlic and add to the pan, sweating gently until tender. Add the beef and cook over a medium/high heat until browned all over and cooked through.
Add the lime zest, coriander, salt and pepper. Grate the ginger and add to the pan. Stir well to combine and continue to cook for a further minute or two until fragrant and the beef begins to crisp.
Whilst the beef is cooking thinly slice the cabbage and cucumber into strips and divide between serving plates.
Top the salad with the cooked beef. Thinly slice the scallions and scatter over the salad with the fresh cilantro.
To prepare the dressing, add the peanut butter, sesame oil, lime juice and water to a small mixing bowl. Whisk together until smooth and drizzle over the salad to serve.