Add your feta to the jug of a food processor or blender (you can also use a stick blender/immersion blender and a large jug).
Next add the fresh lemon juice and the olive oil.
Finally add the mayo, garlic and herbs, then season with salt and pepper.
Now to get the consistency right, start adding some water and blending, until it's right for you (skip this if you want a thick dip instead of a salad dressing).
Check the consisitency to see if you need to add more water (the thickness of a salad dressing is a personal preference) and taste to see if it needs more seasoning.
If it's too tart for you, you can add a teaspoon of maple syrup or a little sugar to help balance out the flavours.
Pour into a jam jar (or your container or choice) and use right away or store in the fridge for 4-5 days.
Enjoy!
Notes
Add a little maple syrup to balance the flavour if it's too tart for you.
Don't add water if you want to keep it thick to serve as a dip.
Add water a little at a time to thin, instead of adding extra olive oil.