Place the cheese in a mixing bowl, then use a fork to mash it.
Stir in yoghurt, garlic, dill, mint and salt.
Transfer the mixture into a serving plate, pour olive oil on top and garnish with chopped dill and mint.
Don't skip salt, since this alters the dip by bringing out the savory flavors from the Greek yogurt. The feta cheese provides a salty flavor to the dip, but it still needs to be salted more.
Use extra-virgin olive oil if you are considering trying a healthier path in making this recipe, plus it adds a certain creaminess to the dish too.
You may add a minimal amount of ground pepper for a little bit of spice that would go well with the raw garlic in the mixture.
If you do not want a salty yogurt sauce, you should consider using kosher salt. Kosher salt will only enhance the flavor of your dish and will not impart any salty taste.
If dill is unavailable from your pantry, you may want to substitute it with dried tarragon instead. Dried tarragon would provide the same touch of anise flavor to the dish that dill is known to impart.