Place a sieve over a bowl

Line the sieve with muslin

Pour the yoghurt into the muslin

Make a ball of the yoghurt, using the muslin and secure the top tightly

Place into the fridge overnight

The next day transfer the yoghurt to a dry piece of muslin and repeat the process

Once the yoghurt has firmed up scoop a tablespoon measure at a time and form balls while rolling in the za'atar

Drizzle with olive oil to serve