Cook the potatoes until fork tender and drizzle the vinegar over the hot potatoes while you boil the eggs for 12 minutes and in the same water, in the last 5 minutes, cook the chopped green beans. Drain and peel eggs.
In the meantime, make the dressing by blending the mayonnaise, avocado, herbs, salt, and pepper. Toss the warm potatoes, green beans, peeled and cut eggs, all together with the dressing and serve however you'd like. This salad is delicious warm, room temperature, and cold.