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Sesame Seed Bun Extreme Close-Up View.

Refrigerate leftovers within 2 hours (or 1 hour if the temperature is above 90° F) and always use within 2 to 3 days. Don’t forget to label!

Sesame Seeds

Sesame is the ninth most common allergy among individuals and can cause severe allergic reactions.

Bread Bun

There are many types of hamburger buns. If food allergies are a consideration, read the label for allergens, such as wheat and soy.


The level of acidity in a pickled product is important for its safety. Refrigerate at 40° F or lower after opening to prevent mold growth.

Tomatoes, Onions, and Lettuce

Rinse under clean, running water before slicing or chopping. Keep cut produce refrigerated until ready to assemble.


Keep refrigerated at 40° F or lower. Wash your hands before handling to prevent possible contamination with Staphylococcus aureus.


Condiments are typically safe due to their acidities. Store refrigerated at 40° F or lower after opening for best quality and flavor.


Cook ground beef to an internal temperature of 160° F, checking with a calibrated food thermometer, to kill bacteria such as E. coli.

New October 2022, Let’s Build a Burger: Keep It Safe, ANR-2930

Read other publications in the Let’s Build a Burger series.

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