I see a CAPTCHA opportunity here. Show the line item and ask people to type both the dish name and price in two boxes. Or may be give a couple of options that the end user must confirm before they can proceed.
Yep, anyone remember having to key in house numbers from street view photos? Similar idea. But I think human/bot differentiation no longer demands so much effort of users lately, so this labor pool could be a relic of the past.
