Cut the zucchinis obliquely, dry them very well, ideally on a towel in the sun for a few hours.

Heat a large pan with a thin layer of oil.  When the oil is hot start to fry the zucchini.  When they begin to brown flip them over then remove to a serving platter or bowl and fry the rest of the zucchini.

For each layer put some salt , garlic, and parsley (to taste).  Add the vinegar to the pan of oil and heat for a minute before pouring over the zucchini.