Stir Fried Balsamic String Beans

1 lb string beans, washed and trimmed
1/2 tbs butter
1/2 tbs extra virgin olive oil
1/4 cup finely diced shallots
2 small garlic cloves or one medium, finely diced or pressed
1 tbs of water, or as needed
salt and pepper to taste
2 splashes of balsamic vinegar

Preheat a wok (or saute pan) at high heat. Add butter, oil, shallots and garlic. Stir fry for 30 seconds. Add string beans and salt and pepper to taste. Stir fry on high for one minute. Lower heat at medium high and add the water. Cover the pan as this will create a steaming effect, about 2 minutes or more depending on your desired doneness. Bring the heat to high once again and uncover the pan. Add the vinegar splashes and stir fry for one minute.