Place a large saucepan of water on the hob and bring to the boil.
Add the green beans to the saucepan of boiling water and boil for 3 minutes. Remove the beans from the boiling water using a slotted spoon and plunge into a bowl of cold water.
Add the curly kale to the saucepan of boiling water and boil for 2 minutes. Remove the curly kale from the boiling water using a slotted spoon and plunge into a bowl of cold water.
Using a sieve, strain off the water from both the beans and the curly kale and shake well to remove excess water. Place on a sheet of kitchen paper to absorb any further moisture.
Place the kale and beans in a large bowl and add the grapes, apple, watercress and quinoa.
Place the lime juice, soy sauce, honey, and garlic granules in a small bowl. Mix with a fork and season to taste with salt and pepper.
Pour the dressing over the salad and toss well. Taste the salad and add a little more salt and pepper if needed.
Serve immediately and - optionally - garnish with lime wedges.