Quinoa, lentil & feta salad

INGREDIENTS

• 200g quinoa
• 1 tsp olive oil
• 1 shallot or ½ onion, finely chopped
• 2 tbsp tarragon , roughly chopped
• 14 oz 400g can Puy or green lentils rinsed and drained
• ¼ cucumber , lightly peeled and diced
• 100g feta cheese , crumbled
• 6 spring onions , thinly sliced
• zest and juice 1 orange
• 1 tbsp red or white wine vinegar