Like the bars of a song you can't scrub away from your brain, this milkshake will stay there, forever dangling its exquisite ambrosial liquid in front of your face until you can't take it anymore. At which point, only two options are available. Spend about a thousand dollars to fly the family across the country for a milkshake at Bobby O's. Or make one at home. One of these is significantly cheaper than the other. So we went with that.