Fill a stock pot half ways with water, season generously with sea salt and heat with a high heat
Meanwhile, add the green beans into a colander and rinse under cold running water
Once the water comes to a boil in the stock pot, add in the green beans, once it comes back to a boil cook the green beans for exactly 2 minutes, then remove them from the stock pot and add into a bowl with iced water, after a couple of minutes drain the green beans and pat completely dry, then trim off a little bit from the ends
Heat a large fry pan with a medium to medium high heat
Once the pan is nice and hot, add in the olive oil and the green beans, mix every 30 seconds so all the green beans evenly sautee, after 3 to 4 minutes and they´re starting to lightly blister, add in the chopped garlic, mix continuously, after 30 seconds add in the sherry vinegar, chopped parsley and season with sea salt & black pepper, quickly mix together and then remove from the heat
Transfer into a serving dish, serve warm or at room temperature, enjoy!