What It Means
A potluck is a communal meal where the people who come each bring food to share, as Merriam-Webster defines it. The dishes then sit out together on one table, which is where food safety comes in. USDA and FDA guidance sets the limits: hot food stays at 140°F or warmer, cold food at 40°F or colder, and food that isn't held at those temperatures comes off the table after 2 hours, or after 1 hour when it's above 90°F.
Try It: How Long Can This Dish Stay Out?
For a dish that isn't being kept hot or cold. Enter how long it has been out; the limits come from USDA and FDA buffet guidance.
Still inside the window. Keep an eye on the clock and serve from it.
Nearly out of time. Chill what's left or swap in a fresh dish from the fridge or oven.
Time's up. USDA and FDA say to throw this dish out.
How People Say It
- "Just bring whatever you like, it's a potluck."
- "Who's got dessert covered?"
- "Can you bring your slow cooker?"
The Breakdown
Worked example. A block party with 20 guests in July. The times and temperatures are an example; the limits are USDA's and FDA's.
| Dish | Set out | Where it sits | Pull it by |
|---|---|---|---|
| Pasta salad, no ice | 6:00 p.m. | Indoors | 8:00 p.m. (2 hours) |
| Deviled eggs, no ice | 6:00 p.m. | Patio at 95°F | 7:00 p.m. (1 hour) |
| Chili in a slow cooker | 6:00 p.m. | Kept at 140°F or warmer | Stays safe while it holds that heat |
| Fruit salad in a bowl of ice | 6:00 p.m. | Kept at 40°F or colder | Stays safe while it holds that chill |
What the result means. This clock only runs on dishes that have slipped out of the safe temperatures. A slow cooker holding 140°F or a bowl of ice holding 40°F keeps a dish off that clock. Food that sat out past its window gets thrown away instead of saved as leftovers.
Planning the sign-up. Ask guests which category they'll bring (main, side, dessert or drinks) so the table isn't all chips. It also helps to know who can bring a slow cooker, chafing dish or warming tray for hot food, and a cooler or bowl of ice for cold food.
Good to Know
FDA and USDA say to keep hot dishes at 140°F or warmer and cold dishes at 40°F or colder. Back-up dishes can wait in the fridge, or in an oven set to 200 to 250°F, until they're needed. Throw out food that's been on the table longer than 2 hours, or 1 hour when it's above 90°F. Guests with food allergies may want to know what's in each dish, so a small card with the ingredients helps.
FAQ
How long can food sit out at a potluck?
USDA and FDA guidance says 2 hours for food that isn't kept hot or cold. When it's above 90°F where the food sits, the limit drops to 1 hour.
How do you keep food hot at a potluck?
Keep it at 140°F or warmer. USDA lists chafing dishes, warming trays and slow cookers for this, and a back-up dish can wait in an oven set to 200 to 250°F.
What does potluck mean?
Merriam-Webster defines a potluck as a communal meal to which people bring food to share. It's also called a potluck dinner or potluck supper.
Do It in Buhata
Quick Poll, Shopping
Use Quick Poll in a shared Space in Buhata to ask who's bringing a main, a side, a dessert or drinks.
Open BuhataRelated Terms and Categories
- Hosting checklist
A list of everything to prepare before guests arrive, from the menu and seating to keeping buffet food at safe temperatures for the whole party.
Sources
Merriam-Webster, "Potluck"; FDA, "Serving Up Safe Buffets"; USDA, "USDA Shares Food Safety Recommendations for Your Potluck" (2025); Ask USDA, "How do I keep foods safe at a buffet?"; USDA, "Your Holiday How-To: Keeping Hot Foods HOT and Cold Foods COLD!"
- www.merriam-webster.com/dictionary/potluck
- www.fda.gov/food/buy-store-serve-safe-food/serving-safe-buffets
- www.usda.gov/about-usda/news/blog/2025/05/20/usda-shares-food-safety-recommendations-your-potluck
- ask.usda.gov/s/article/How-do-I-keep-foods-safe-at-a-buffet
- www.usda.gov/about-usda/news/blog/your-holiday-how-keeping-hot-foods-hot-and-cold-foods-cold
Last updated .