Party & Catering Terms Explained (Glossary)

Food and quantities

See the meat per person calculator for cooked yields in use.
Word	What it means
Per head / per person	An amount for each guest. Catering quotes are usually per head, before service charges and tax.
Serving	One portion. Quantity-cooking tables use 3 oz of cooked meat and ½ cup of most sides as a serving.
As purchased (AP)	The weight you buy, bones and fat included. The opposite of cooked or edible portion.
Edible portion (EP)	What is left to eat after cooking, boning and trimming.
Cooked yield	How much cooked meat a pound of raw meat gives. A bone-in pork shoulder yields about 0.52 lb per lb (USDA Food Buying Guide).
Shrink	Weight lost in cooking — mostly water and fat. Brisket shrinks a lot; ground beef less.
Packer brisket	A whole brisket, both the flat and the point, with its fat cap — what most barbecue cooks buy.
Boston butt	The upper part of a pork shoulder, the usual cut for pulled pork. Sold bone-in or boneless.
Party wings	Chicken wings cut into the drumette and the flat, with the tip removed. About 10 pieces per pound.
Spiral-sliced ham	A bone-in ham sliced all the way around to the bone, fully cooked and ready to heat.
Fully cooked / cook-before-eating	Ham labels. Fully cooked hams are reheated to 140 °F (if from a USDA-inspected plant); cook-before-eating hams go to 145 °F.
Heavy hors d’oeuvres	Appetizers substantial enough to replace a meal.

Cooked yield is the word that explains most surprises: it is why how much pulled pork for 50 people means buying nearly twice the cooked weight in raw shoulder, and why how much brisket for 20 people needs an 18 lb packer.

Food-safety terms from USDA FSIS and university extension services.
Word	What it means
Chafing dish	A frame holding a water pan and a food pan over a small fuel can, to keep buffet food hot.
Full pan / half pan	Standard steam-table pan sizes; two half pans fit in the space of one full pan.
Hot holding	Keeping cooked food at 140 °F or above until it is served.
Cold holding	Keeping cold food at 40 °F or below — on ice or in the fridge.
2-hour rule	USDA FSIS: perishable food should not sit at room temperature more than 2 hours, or 1 hour above 90 °F.
Danger zone	The range between 40 °F and 140 °F where bacteria multiply quickly.
Urn cup	The “cup” on a coffee urn or coffee maker — 5 fl oz, per Hamilton Beach’s manual.

Why an urn cup matters: a “100-cup” urn holds about 62 eight-ounce mugs — see how much coffee for a 100 cup urn.

Wilton cake serving guide.
Word	What it means
Party serving	A cake slice about 1½ × 2 in, 4 in tall (Wilton).
Wedding serving	A thinner slice, about 1 × 2 in, 4 in tall (Wilton).
Layer	One baked cake, usually 2 in deep. Two layers with filling make a 4 in cake.
Tier	One stacked level of a tiered cake, usually two or three layers tall.
Half sheet	A rectangular cake around 12 × 18 in (bakeries vary), usually one layer.

Seating from Lifetime and Bright Event Rentals; linen sizes from rental companies’ charts.
Word	What it means
60 in round	A round table 5 ft across; seats 8 comfortably, up to 10.
Large pizza	At most national chains, a 14 in pizza cut into 8 slices — see how many slices in a large pizza.
Party sub / hero	A long sandwich sold by the foot — see how many people does a 6 ft sub feed.
Banquet table	A long rectangular folding table, usually 6 or 8 ft by 30 in.
Drop	How far a tablecloth hangs over the table edge. About 30 in reaches the floor on a standard table.
Floor-length	A cloth whose drop equals the table height, so it just reaches the floor.
Overlay	A smaller cloth laid on top of the main one, often square on a round table.
Frame tent / pole tent	Frame tents stand on a metal frame with no center poles; pole tents are held up by center poles and staked guy lines.
Occupant load	The number of people a space may hold under the fire code, set by the local fire marshal.

NIAAA; federal standards of fill (27 CFR 4.72 and 5.203); barrel definition (27 CFR 25.11); KegWorks keg sizes.
Word	What it means
Standard drink	NIAAA’s unit: 0.6 fl oz of pure alcohol — 12 oz of regular beer, 5 oz of table wine or 1.5 oz of 40% spirits.
Fifth	A 750 ml bottle of spirits, close to a fifth of a gallon.
Handle	A 1.75 L bottle of spirits.
Magnum	A 1.5 L bottle of wine — two standard bottles.
Half barrel	The full-size beer keg: 15.5 gallons, half of the 31-gallon barrel.
Pony keg	A quarter barrel: 7.75 gallons.
Sixth barrel	A 5.16-gallon keg, popular for a second beer.
Party pump	A hand-pumped tap for a rented keg.

TipNot sure where to start? For a meal, start with the food per person calculator; for a holiday, the turkey size calculator; for a venue or backyard, the table calculator.