Here you can find several exercises and games to practise vocabulary related to food.

http://www.eflnet.com/vocab/food_vocabulary.php

What about countable and uncountable nouns?

http://www.uv.mx/tecaprendizaje/material/cursoenlinea/Mary/Grammar/Countable%20and%20Unc%20Nouns/Countable%20and%20uncountable/countable_and_uncountable_nouns.htm

And just for the fun of it... When Harry met Sally: ordering at a restaurant

http://www.youtube.com/watch?v=cnlm2e3EN78&feature=related