Your plant is Phytolacca americana, or Pokeweed. I have one growing in my
yard and they are very interesting plants!

Ack...lol. I tasted about 3 or 4 berries on this plant almost a year
ago, thinking that they were edible wild cranberries...they didn't
taste half bad...they had a sweet taste, and then went very sour at
the end...didn't get sick though.