I have had shovelers.... I place the plate just out of reach and dole out the food a bite or two at at time. Verbally, I talk them through it "Bite, chew, then swallow. Then you can have more." Reminding them, like playfelt said, about what you expect.
I haven't had to go so far as what Judy suggested; but I would, if verbally asking them to eat properly wasn't working.
Totally agree that many parents cut/mash up food too long. I had an almost 2 year old that I couldn't give a whole muffin, because he would just jam it all in his mouth. I felt like a broken record reminding/teaching him how to eat without choking!