An American style milkshake in part requires a blend that will stand a spoon but can be sipped from a straw without much trouble. Response to last week's ranking of ten different milkshakes, however, suggests some people really don't consider the difference between a milkshake and stirred up ice cream very important--to which I reply, no biggie: just admit, if you like cups thick as concrete and impossible to draw through a straw, you really don't like milkshakes. Nope, you like barely softe