Place eggs in pot of water and bring to the boil. Once boiling continue cooking for three minutes then douse eggs in cold water bath.
Meanwhile shred cabbage and place in a large bowl with red onion, celery and parsley
Add feta, olive oil, lemon juice, oregano, garlic and water to a small blender or food processor. Blend until smooth. Toss through cabbage salad.
Toast pepitas for 3 - 5 minutes in a small skillet on the stove top
Flake tuna from can on top of salad and add pepitas. Toss then roughly chop avocado, and eggs and place on top of salad.
Enjoy.