Quinoa Salad: Rinse quinoa in a sieve with cold water. Place in a saucepan and add 1 ½ cups cold water and ¼ tsp salt. Bring to the boil. Reduce heat and simmer for approx. 10 minutes until the water has been absorbed. Cover and stand for 5 minutes. Fluff quinoa with a fork and transfer to a bowl to cool. Mix in spring onions, cherry tomatoes, mint, parsley and toasted pinenuts if wished.
Tzatziki Dressing: Grate the cucumber and place in a bowl lined with paper towel, to absorb any water from the cucumber. Squeeze out any excess. Mix together yoghurt, mint, Gregg's Sumac Ground Blend and grated cucumber. Spoon dressing over salad.