the amount of food per person needed!
For rice, pasta, eggs and meat, check out these charts.
For a cooking for a crowd, check out this cheat sheet.
Servings per bottle of wine can be found here.
Fruits and veggies servings can be found at this link.
You can always use the USDA guidelines.
Even though 2.5 ounces of Porterhouse is the proper serving for a healthy diet, I'm pretty sure Mister OFM wouldn't like for me to follow that guideline. Be sure to adjust for personal preference as well as your own unique set of circumstances.