Beaumont Sour Orange is not much for eating out of hand, as the pulp is very sour. What it is famous for, is the oil in the fruits peel. The peel's oil is what gives the flavor to Earl Gray tea, and as Citradia wrote the peel oils are also used in perfume manufacturing. I also once had a Bergamont tree, and can attest that it is a very overgenerous grower.